Roscoea

Trial of Roscoea 

2008-2011 

Entries receiving 

The Award of Garden Merit (H4) 

R. auriculata 

AGM (H4) 2011 

[trial entries: 17, 18, 19, 20, 21, 22, 34, 92, 

96] 

Entered by: R Zijerveld, RBG Kew, Avon 

Bulbs, Beeches Nursery, Bressingham 

Gardens and Hugh Nunn 

Foliage: Mid green (137A); 

Leaf features: Sheaths green, heavily 

vertically corrugated; 

Peduncle: Hidden in bracts; 

Flower colour: Lips purple (N82A), hood 

and lateral petals slightly paler, staminodes 

white mottled purple; 

Floral bract colour: Green, calyx white 

flushed purplish red toward tip, pale yellow 

green on edges to tip. 

The variation between these plants was 

small and within the group there were no 

poor plants. Good value plants that are 

vigorous and produce plenty of flowers over 

a long period. 

Roscoea Trial No. 1436 2

R. auriculata ‘Summer Deep Purple’ 

AGM (H4) 2011 

[trial entry: 92 & 96] 

Entered by: Bressingham Gardens and 

Hugh Nunn 

Lots of lush growth and tall for an 

R. auriculata. Vigorous and bulks up quickly 

and could need fairly regular division, to 

prevent the plant keeling over when it gets 

overcrowded. Produced a lot of flower over 

a long period. A great garden plant. 

R. x beesiana 

AGM (H4) 2011 

[trial entries: 28, 29, 30, 31, 32, 33] 

Foliage: Mid Green (N137A), thin dark red 

hyaline edge, especially to lower half of 

leaves and ligule; 

Leaf features: Sheaths green with red 

hyaline seam along back, heavily vertically 

corrugated; 

Peduncle: Green, glabrous; 

Flower colour: Very pale yellow, (paler 

than 1D), some flowers almost white with 

dull purple (N79D) splashing, this darkest 

on lips, yellower flowers with just a hint of 

purple in places; 

Floral bract colour: Green, red edged and 

tipped, calyx dull yellow flushed red, 

strongest at base and tips. 

The flower colour can vary from season to 

season and between clones. It will be 

covered in flower for a long time. The plants 

will bulk up well. Will continue to look good 

even in hotter periods when other Roscoea 

are starting to suffer. 

R. cautleyoides 'Himalaya' 

AGM (H4) 2011 

[trial entry: 43] 

Entered by: R Zijerveld 

Foliage: Yellowish green, bit darker than 

146A on lower leaves; 

Leaf features Sheaths green, glaucescent 

on lower leaf undersides and sheaths; 

Peduncle: Green, glaucescent; 

Flower colour: Pale Yellow (2D), veins and 

throat slightly darker (2C); 

Floral bract colour: Bracts and calyx 

green. 

Produces a substantial amount of flowers 

which are slightly paler than other types of 

R. cautleyoides. 


R. cautleyoides 'Jeffrey Thomas' 

AGM (H4) 2011 

[trial entries: 40 & 41] 

Entered by: Sampford Shrubs and R 

Zijerveld 

Foliage: Mid green (N137A); 

Leaf features: Leaves and sheaths slightly 

glaucescent. Sheaths green; 

Peduncle: Green, glaucescent; 

Flower colour: Lip very pale yellow (4A) 

veined slightly darker yellow, hood and 

wings flushed yellow (4B), throat yellow 

(5C); 

Floral bract colour: Bracts green flushed 

red (187C) in upper half; calyx greenish 

yellow flushed red. 

A very strong growing and floriferous 

cultivar, and one of the earliest types of 

Roscoea to flower. 

R. cautleyoides ‘Abigail Bloom’ 

entered as “Kew Dwarf form” 

AGM (H4) 2011 


Entered by: Bressingham Gardens 


Leaf features: Sheaths greyish green, 

dull. Red tinging at base of lowest sheath; 

Peduncle: Not emerging from leaf sheaths; 

Flower colour: Very pale yellow, (paler 

than 1D), slightly stronger yellow in throat 

and hood; 

Floral bract colour: Green tipped greyed 

red, Calyx greenish, tinged red. 

A lovely compact plant – like a smaller ‘Kew 

Beauty’. All the flowers open at once 

producing an outstanding display, which 

also means that it doesn’t look untidy alter, 

unlike many other cultivars. 

R. forrestii 

AGM (H4) 2011 


Entered by: B Mathew 

Foliage: Mid green, (yellower than 137A); 

Leaf features: Sheaths green, striate; 

Peduncle: Stems hidden by 

foliage/sheaths; 

Flower colour: Pale yellow (2C); 

Floral bract colour: Bracts green, pale 

with red tinged sheaths. 

A distinctive species. Currently there is only 

one clone of this species in cultivation. 

Produces distinctive bunches of 

inflorescences. The flowers are a lovely 

colour. 


R. humeana f. lutea 

AGM (H4) 2011 


Entered by: RBG Kew 

Foliage: bright green; 

Leaf features: Broad leaved, sheaths 

green; 

Peduncle: Not exerted from the bracts; 

Flower colour: Pale yellow (2C); 

Floral bract colour: pale green, whitish at 

base, much shorter than the calyx. 

Calyx: green, yellowish at apex. 

The plants produce a lot of flower in a short 

burst of activity. The large curved dorsal 

hood gives the flowers a distinctive shape. 

R. humeana f. tyria 

AGM (H4) 2011 




Leaf features: Broad-leaved, sheaths 

green; 


Flower colour: Dull deep purple, similar to 

(N79A-B) but containing purple (77A), some 

white in staminodes and blotches at top of 

split lips/throat; 

Floral bract colour: Bracts green, slightly 

pruinose, Calyx greyish green lightly 

flushed red. 

Lovely dark purple flowers. Clumps up well 

and ‘is a good doer’. Can be successfully 

raised from seed. Makes a beautiful pot 

plant. 


AGM’s to be reconfirmed: 

R. 'Kew Beauty' 

AGM (H4) 2011 

[trial entries: 46, 47, 48] 

Entered by: RBG Kew, Beeches Nursery 

and Bressingham Gardens 

A vigorous plant which has lovely flowers. 

A very popular cultivar. Originally thought to 

be a R. cautleyoides, it is now thought that it 

is R. cautleyoides x R. humeana hybrid. 

AGM’s subject to Naming / Availability 

R. cautleyoides ‘Purple Queen’ 

AGM (H4) 2011 (Subject to availability) 

[trial entries: 50, 53] 

Entered by: R Zijerveld and Beeches 

Nursery 

Foliage: Yellow green (146A); 

Leaf features: Lightly glaucescent, lowest 

sheath with narrow red tinted hyaline 

margin; 

Peduncle: Green. terete; 

Flower colour: Dull purple (N78/N77B), 

older flowers (N77C). Yellow (11C) patches 

at top of lip; 

Floral bract colour: Bracts green tinged 

grey, flushed red in places; calyx greeny 

grey. 

A more shade loving cultivar, it is the best 

of the purple flowered R. cautleyoides. These 

often start to flower 7-10 days before the 

yellow R. cautleyoides. 

R. humeana ‘Stephanie Bloom’ 



Entered by: Bressingham Gardens 

Foliage: Mid green, (somewhat yellower 

than N137A); 

Leaf features: Leaves short, strongly 

sheathing flowers. Sheaths green, lowest 

tinged reddish grey; 


Flower colour: Rich purple, (darker than 

77A), some white in staminodes and 

blotches at top of split lip/throat; 

Floral bract colour: Bracts green; calyx 

dirty white flushed purple and yellow green. 

A very floriferous cultivar that increases 

well, and will look wonderful for a good 

length of time. A distinct and lovely plant. 


R. 'McBeath's Pink' 



Entered by: Hugh Nunn 

Foliage: Yellow green, (brighter and 

greener than 146A), red-tinged at edges; 

Leaf features: Sheaths strongly tinged red 

(183A); 

Peduncle: Stem not protruding above 

sheathing leaves; 

Flower colour: Ground colour pale purple 

(76C) but flushed purple (N81C to N81B), 

especially on lip and standard; 

Floral bract colour: Red; calyx greyed red 

(180C). 

A very early and attractive cultivar. The best 

pink colour in the trial. Bulked up 

reasonably well. Will also grow well and 

come true from seed. 

(Will be available in 2-3 years). 

R. humeana f. humeana 




The typical form of this species with a good 

length flowering season. Beautiful flowers 

of a distinctive purple. 


R. purpurea f. rubra (syn. 'Red Gurkha') 

BBMS 43 AGM (H4) 2011 



Foliage: Mid green (137B); 

Leaf features: Sheaths greyed red (180A), 

vertically ridged and wrinkled; 

Peduncle: not emerging from leaf sheaths; 

Flower colour: Red-orange (N35A), lip 

paler orange (N34C); 

Floral bract colour: Floral bracts red 

edged green, calyx is shorter than the 

bract. 

A moisture and shade loving form, 

Variants of R. purpurea f. rubra differ in 

having red or green leaf sheaths and there 

are also some plants which are 

intermediate in this character. The name 

'Red Gurkha' has been applied to redflowered 

examples of R. purpurea 

regardless of leaf sheath colour. The RHS 

Advisory Committee on Nomenclature and 

Taxonomy (ACONAT) concluded that 

because of the variation encompassed by 

the name it was best treated as a synonym 

of “f. rubra”. 

R. purpurea 'Dalai Lama' 

AGM (H4) 2011 


Entered by: Beeches Nursery 

Foliage: Mid Green, yellower than N137A; 

Leaf features: Sheaths deep Red 187A-B, 

vertically ridged but not wrinkled, lightly 

glossy and lightly pruinose above; 

Peduncle: Stem and all but tips of floral 

bracts contained in constricted upper leaf 

sheath; 

Flower colour: Lip Pale Violet, lighter and 

brighter than N82D, deeper Purple Violet 

N81A-B and white streaks in throat, hood 

and lateral petals white flushed Violet N82, 

stigma hood white; 

Floral bract colour: Red 187A/B, green 

tipped, sheathes barely visible, green 

tipped. 

A strong grower. Lovely foliage and red 

stems, which make the plant attractive even 

when it is out of flower, giving it good 

garden value. Plenty of pale purple flowers 

produced later in the season. 


R. wardii 




Foliage: Yellow green, somewhat darker 

than (146A); 

Leaf features: Yellow green, bit darker 

than (146A); 

Peduncle: Stem barely protruding from 

leaves; 

Flower colour: New flowers very dark 

purple (79A), becoming paler and redder to 

(N79B), even paler in places; 

Floral bract colour: Green, red edged; 

calyx off white with red flush in places. 

The plants have relatively few leaves to 

flower. The flower is a superb deep colour 

and has a frilly labellum. Not the fastest to 

bulk up. 

AGM’s to be rescinded: 

R. cautleyoides AGM (H4) 1993 

It was concluded that the original AGM was not appropriate, as not all forms of this species were 

considered to be AGM worthy, and there were cultivars which truly stood out as superior clones. 

R. cautleyoides ‘Kew Beauty’ AGM (H4) 1998 

The original AGM has been rescinded because the Panel concluded that the original designation as a R. 

cautleyoides was incorrect. The plant is thought to be a R. cautleyoides x R. humeana hybrid. The award 

has been re-made to this clone but under the altered name. 

R. humeana AGM (H4) 1993 

It has been decided that the original AGM was not appropriate and AGM‟s to forms and cultivars were 

more beneficial. Also, not all forms of the species were included in the trial e.g. R. humeana f. alba , which 

alogh it is known to produce lovely flowers, it can die out after a few years. It is thought that it would 

probably be unwise to give f. alba an AGM around the table, and therefore because not all types of R. 

humeana were AGM worthy. 


Honourable mentions: 

The following entries were thought to be good plants, of interest to people with a special interest in 

Roscoea or to anyone starting a collection or of these plants. 

R. capitata (Tn. 16) 

[Sender: RBG Kew] 

A long flowering period. Very distinctive species because of the 

interesting inflorescence structure, which makes the plant more 

decorative. Lovely deep purple flowers. Slightly slower to increase 

than many other entries. Not widely available. 

R. cautleyoides purple-flowered 

(Tn. 54) [Sender: RBG Kew] 

Very distinctive leaf colour – glaucous foliage. The contrast 

between the silvery blue leaves and the purple flowers was 

much admired. Not as leafy as other R. cautleyoides, and 

doesn‟t clump up as fast. Known to set seed. A very 

attractive delicate plant. Not widely available. 

R. purpurea ‘Brown Peacock’ 

(Tn. 78) [Sender: R Zijerveld] 

The most distinctive foliage of all the entries. Looks good out of 

flower because of the red underside of the leaves. The flowers 

were paler than other similar R. purpurea entries. The plant bulks 

up well. 

R. purpurea ‘Wisley Amethyst’ 

(Tn. 91 & 95) [Senders: R Zijerveld & Hugh Nunn] 

A plant that originated at RHS Wisley on Battleston Hill. It will flower 

much better in more shady positions than other entries. Unusual 

and striking flowers, which have distinctive purple markings on the 

white flowers. An early flowering form of R. purpurea. 


R. ganeshensis 

(Tn. 63) [Sender: RBG Kew] 

The plant is liked because of its beautiful crinkly lip which is 

reminiscent of crumpled tissue paper. Although the plant did well, it 

did not bulk up very fast, and overall was not considered to be AGM 

standard, but it‟s interesting flower texture and the fact that it is the 

last Roscoea to flower make it interesting. The species was 

collected by Bill Baker in 1992; he also collected R. purpurea rubra 

on the same trip. (Not available). 

Trial Notes: 

Objectives: 

To assess a range of currently available Roscoea species and cultivars 

To recommend the Award of Garden Merit [AGM] to taxa considered excellent for ordinary garden 

use. 

To determine correct nomenclature 

To produce a permanent record through herbarium specimens, photographs and written descriptions 

for the RHS Herbarium at Wisley. 

Entries: 

There are 102 entries in the trial, submitted by various individuals and nurseries in the UK and 

Europe, the National Plant Collection Holder of Roscoea and The Royal Botanical Gardens, Kew. 

Cultivation: 

Roscoea prefer a cool site, preferably a north-facing slope (giving afternoon shade to keep their 

roots cool in the summer). Excessive woodland conditions are not required, however, a generous 

root-run and a good quantity of humus in the soil is essential to keep the roots damp during the 

summer. Planting took place on 7 th April and the beds were then top-dressed with up to 2.5cm (1") 

of fine bark chippings. 

Picture: A large rhizome of R. auriculata. 

The rhizomes should be kept in damp 

compost to prevent them drying out whilst 

being moved / transferred. 

Picture: The entries being planted in the 

raised beds at Wisley, with the bark 

chipping mulch being applied over the top. 


The best time to move Roscoea is in the autumn when the foliage has died right down and the 

plants are dormant rhizomes. It is possible to move the plants when they are in leaf, after they 

have finished flowering. To do this plenty of soil around the plant should be lifted with them and 

not shaken off, so that the rhizome is protected and does not dry out. The plants should then be 

planted again as quickly as possible. 

The plants were planted in raised beds on the Trials Field to ensure that the plants did not become 

water-logged in winter. It was recommended that the soil be humus-rich and that a pH of 6 should 

be aimed for. A mulch of fine bark was applied to the surface of the soil to keep the roots damp 

during the summer months, and also to help maintain acidic soil conditions and provides additional 

protection from winter cold. The Roscoea proved to be very hardy, surviving two successive harsh 

winters. 

Picture: R. × humeana 'Harvington 

Royale', demonstrating the triangular 

planting. 

Three plants of each entry were grown in triangular blocks 30cm apart each way, with 45cm 

between entries. Smaller rhizomes were planted 10cm deep and larger rhizomes 15cm deep. 

The plants were dead headed to prevent seeding. Greenfly and slugs can attack new growth, and 

so were controlled as necessary and a watch was kept for virus infection. 

It was found necessary to erect some net shading over the plants in the height of summer to 

prevent them from scotching and wilting in the mid day and afternoon heat. The dappled shade 

was intended to replicate that of a woodland setting – their natural habitat. Some watering was 

also necessary. 

Picture: The shade used to create the 

dappled light – mimicking the woodland 

environment. 

Picture: R. 'Summer Deep Purple' – in the 

partial shade created to protect the plants in 

the height of summer. 


Judging: 

The Rock Garden Plant Trials Subcommittee will assess entries in the trial for the 

Award of Garden Merit using the following criteria: 

Ease of cultivation : hardiness : reliability : floriferousness 

Three genus specialists were co-opted for assessment of the Roscoea. They provided value information 

about the origins and correct nomenclature of the entries; 

Roland Bream (National Plant Collection Holder of Roscoea) 

Jill Cowley (author of The Genus Roscoea) 

Richard Wilford (Collections Manager, Hardy Display Section, RBG Kew). 

Colin Crosby, Garden Manager of Wisley, was also invited to attend the meetings, as he is a keen 

Roscoea and Rock Garden Plant enthusiast. The Subcommittee were very grateful for his contributions. 

Findings: 

Throughout the trial R. cautleyoides was found to be very variable, and this is also seen in the wild. 

There were many discussions as to whether all variations were good enough to warrant the award 

of AGM. 

The entries which were named R. x beesiana Gestreept Group and the ones which were reported 

to have white flowers, all appeared to be similar and highly variable. It was noted that the flower 

colour varied from year to year and was temperature dependant (more purple in 2010 and more 

cream in 2011). The flowers were variable even on the same plant. A selection of flowers is shown 

below; ranging from the ones which are very purple and flecked with cream, to those that are 

almost entirely pure cream. 

Although the Roscoea were hardy, the prolonged cold weather during the early part of 2010 meant 

that the plants were delayed in their emergence, and then can be held back with their flowering as 

well. 

Heavy rain can damage Roscoea. As they are naturally best grown in shaded areas, they are 

usually protected from the rain by trees. Rain can cause the flowers to go soggy, and for taller 

plants, the stems to bend. 

Hot weather will cause the plants to come into flower quickly, and can also cause the plants to finish 

flowering quickly. Shade and moisture will allow the plants to flower at their best for the longest season 

possible. The two entries that were found to be in particular need of shade were #63 (R. ganeshensis) and 

#88 (R. purpurea f. rubra). Later flowering entries were more prone to heat and water stress, as they 

flowered during the peak of summer when it was dry and hot. R. purpurea and R. auriculata both have 

better flowers when they have better growing conditions i.e. more water and shade. In the sun they can 


suffer and produce few flowers. The shading was used in the trial to represent the conditions the plants 

should be grown in, as there was not a suitable wooded site that could be used for the trial. The plants 

however, can survive heat stress, and in July 2010 were surviving temperatures exceeding 30 o C. 

Roscoea are often grown in a woodland setting, but are also happy in partial sun, or even full sun 

in cooler parts of the country. They like plenty of water when growing, but keep them drier during 

their winter dormancy to prevent them rotting. You can also grow them successfully in containers. 

Additional Information: 

Roscoea purpurea f. rubra versus „Red Gurkha‟: 

purpurea f. rubra 

Until 1994, the known colour range of Roscoea 

flowers included whites, purples, pinks and 

yellows. Then, an expedition to the Ganesh 

Himal in central Nepal made an exciting 

discovery – a form of Roscoea purpurea with 

bright red flowers. In their native Nepal they are 

known as rasagari and the rhizomes are used as 

a tonic. The name „Red Gurkha‟ was originally 

given to these plants but the variability of plants 

under this name, particularly in the colour of the 

leaf sheath, has led the RHS Advisory 

Committee on Nomenclature and Taxonomy 

(ACONAT) concluded that it is best treated as a 

synonym of “f. rubra”. 

As Roscoea are increasing in popularity, new cultivars are being introduced onto the market, as 

more clones and species are becoming increasingly readily available in the trade. The popularity of 

R. purpurea f. rubra is already providing exciting new breeding opportunities, many of which were 

too recently introduced to be included in the trial. One such example is R. „Royal Purple‟. An 

example which was in the trial was R. „Raspberry Ripple‟, a hybrid of R. cautleyoides × R. 

purpurea f. rubra. 

Picture: Two hybrids with R. „purpurea f. 

rubra in its parentage. Left: R. „Raspberry 

Ripple‟. Right: R. „Royal Purple‟ (picture 

courteous of P. Erskine). 


Visit to the National Collection of Roscoea 17 th August 2011: 

On the 17 th August, Roland and Gay Bream kindly invited the Rock Garden Trials Assessment Panel to 

visit their National Collection of Roscoea. The collection consists of over 95 taxa, which are a mixture of 

species, hybrids and different cultivars. They are either scattered throughout the garden, planted under 

fruit trees, or in pots. Roland reported that his collection did very well in pots, and were very hardy, even in 

the winter 2010 – spring 2011, when temperatures reached -17 o C, the plants survived well. Roland 

reported that the only species that he did have trouble with, that proved to be fussier about its conditions 

and slightly less hardy than most was R. ganeshensis. 

Roland explained how he had become interested in the genus. When ordering plants from a catalogue, he 

decided to try something different that he had never tried before. The yellow flowers of R. „Kew Beauty‟ 

caught his eye in the catalogue. The following summer the plant successfully came up and continued to do 

well in his garden. Encouraged, Roland then tried other species as he came across them, and gradually 

became fascinated with the genus. 

Further reading: 

For more information of the Genus, as well as cultivation notes, please see the monograph by Jill Cowley. 

The Genus Roscoea (Kew Botanical Magazine Monograph). ISBN-10: 1842461346 


Flowering times: 

Picture: These are the approximate flowering times for the different Roscoea species, with some example cultivars to show 

significant variations. The plants are listed in order of flowering. These are an amalgamation of the data collected in 2010 and 2011. 

The flowering times in 2010 were almost 2 weeks later than expected for the earlier flowering types (e.g. R. cautleyoides and R. 

humeana) as a result of the harsh winter, but this difference was lessened to a few days by the time entries such as the later 

flowering R. purpurea and R. ganeshensis come into bloom. Some plants will continue to flower into September, but the flower 

production will slow as the temperature starts to drop rapidly. 

Roscoea Trial 1436 3

Trial Entries: 

Trial 

No. Award Plant Name Sender 

1 R. schneideriana RBG Kew 

2 R. scillifolia forma atropurpurea Broadleigh Gardens 

3 R. scillifolia forma atropurpurea Hopleys Plants Ltd 

4 R. scillifolia forma scillifolia R Zijerveld 

5 R. scillifolia deep purple forma scillifolia Beeches Nursery 

6 R. scillifolia pink-flowered forma scillifolia RBG Kew 

7 R. scillifolia pink-flowered forma scillifolia Mary Green 

8 R. sinopurpurea tibetica Beeches Nursery 

9 R. tibetica Flowers by Design 

10 R. tibetica RBG Kew 

11 R. alpina RBG Kew 

12 R. alpina Proper Plants 

13 R. alpina R Zijerveld 

14 R. alpina purple-flowered R. scillifolia forma 

scillifolia 

Broadleigh Gardens 

15 R. australis RBG Kew 

16 R. capitata RBG Kew 

17 R. auriculata 'White Cap' R Zijerveld 

18 R. auriculata RBG Kew 

19 R. auriculata R Zijerveld 

20 R. auriculata Avon Bulbs 

21 R. auriculata 'Favourite' R Zijerveld 

22 R. auriculata 'Floriade' R Zijerveld 

23 R. wardii RBG Kew 

24 R. brandisii tumjensis B Mathew 

25 R. tumjensis RBG Kew 

26 R. tumjensis 'Purple Giant' R Zijerveld 

27 R. tumjensis 'Purple Giant' Beeches Nursery 

28 R. 'Beesiana' x beesiana Gestreept Group Avon Bulbs 

29 R. 'Beesiana' x beesiana Gestreept Group Broadleigh Gardens 

30 R. 'Beesiana' x beesiana Gestreept Group Bressingham Gardens 

31 R. 'Beesiana' x beesiana Gestreept Group R Zijerveld 

32 R. 'Beesiana' white-flowered x beesiana Gestreept 

Group 

R Zijerveld 

33 R. 'Beesiana' white-flowered x beesiana Gestreept 

Group 

Beeches Nursery 

34 R.'Monique' auriculata Beeches Nursery 

35 R. cautleyoides × R. purpurea 'Red Gurkha' 

„Raspberry Ripple‟ 

B Mathew 

36 AGM (H4) 1993 R. cautleyoides Broadleigh Gardens 

37 AGM (H4) 1993 R. cautleyoides Proper Plants 

38 AGM (H4) 1993 R. cautleyoides Avon Bulbs 

39 AGM (H4) 1993 R. cautleyoides Bressingham Gardens 

40 R. cautleyoides 'Jeffrey Thomas' Sampford Shrubs 

41 R. cautleyoides 'Jeffrey Thomas' R Zijerveld 

42 R. cautleyoides 'Early Yellow' R Zijerveld 

Roscoea Trial 1436 4

Trial 


43 R. cautleyoides 'Himalaya' R Zijerveld 

44 R. cautleyoides 'Betty Farquar' RBG Kew 

45 R. cautleyoides Kew dwarf-form „Abigail Bloom‟ Bressingham Gardens 

46 AGM (H4) 1998 R. cautleyoides 'Kew Beauty' syn.'Grandiflora' RBG Kew 

47 AGM (H4) 1998 R. cautleyoides 'Kew Beauty' Beeches Nursery 

48 AGM (H4) 1998 R. cautleyoides 'Kew Beauty' Bressingham Gardens 

49 R. cautleyoides mauve-flowered (CLD 1050) B Mathew 

50 R. cautleyoides 'Paars' „Purple Queen‟ R Zijerveld 

51 R. 'Purple King' cautleyoides purple-flowered R Zijerveld 

52 R. 'Purple King' cautleyoides purple-flowered Beeches Nursery 

53 R. cautleyoides purple-flowered „Purple Queen‟ Beeches Nursery 

54 R. cautleyoides purple-flowered RBG Kew 

55 R. cautleyoides 'Reinier' R Zijerveld 

56 R. cautleyoides 'Vanilla' Mary Green 

57 R. cautleyoides 'Vanilla' R Zijerveld 

58 R. cautleyoides 'Vanilla Ice' R Zijerveld 

59 R. cautleyoides 'Vien Beauty' Roland Bream 

60 R. cautleyoides 'Yeti' R Zijerveld 

61 R. cautleyoides var. cautleyoides RBG Kew 

62 R. forrestii B Mathew 

63 R. ganeshensis RBG Kew 

64 AGM (H4) 1993 R. humeana f. humeana RBG Kew 

65 R. humeana australis Sampford Shrubs 

66 AGM (H4) 1993 R. humeana Broadleigh Gardens 

67 R. humeana ex. 11W Bressingham Gardens 

68 R. humeana ex. 39 „Stephanie Bloom‟ Bressingham Gardens 

69 R. humeana ex.11E Bressingham Gardens 

70 R. humeana f. tyria 'Inkling' Inkling Group B Mathew 

71 R. humeana f. tyria 'Inkling' Inkling Group RBG Kew 

72 R. humeana f. lutea RBG Kew 

73 R. humeana yellow B Mathew 

74 R. praecox RBG Kew 

75 R. purpurea „Helen Lamb‟ Avon Bulbs 

76 R. purpurea RBG Kew 

77 R. purpurea R. auriculata Proper Plants 

78 R. purpurea 'Brown Peacock' R Zijerveld 

79 R. purpurea 'Dalai Lama' Beeches Nursery 

80 R. purpurea 'Nico' R Zijerveld 

81 R. purpurea 'Niedrig' „Red Neck‟ Beeches Nursery 

82 R. purpurea 'Neidrig' „Red Neck‟ R Zijerveld 

83 R. purpurea 'Peacock' R Zijerveld 

84 R. purpurea 'Peacock Eye' R Zijerveld 

85 R. purpurea 'Procera' R. auriculata R Zijerveld 

86 R. purpurea 'Red Foot' R Zijerveld 

87 R. purpurea f. rubra RBG Kew 

88 R. purpurea f. rubra 'Red Gurkha' BBMS43 RBG Kew 

89 R. purpurea 'Twin Towers' R Zijerveld 

90 R. purpurea 'Vincent' R Zijerveld 


Trial 


91 R. purpurea 'Wisley Amethyst' Proper Plants 

92 R. purpurea early-flowering „Summer Deep Purple‟ Bressingham Gardens 

93 R. purpurea late-flowering auriculata Bressingham Gardens 

94 R. purpurea 'Heronswood Lady' Flowers by Design, 

95 R. purpurea 'Wisley Amethyst' Hugh Nunn 

96 R. 'Summer Deep Purple' Hugh Nunn 

97 R. × humeana 'Harvington Raw Silk' Hugh Nunn 

98 R. × humeana 'Harvington Royale' Hugh Nunn 

99 R. 'McBeath's Pink' Hugh Nunn 

100 AGM (H4) 1993 R. cautleyoides Hugh Nunn 

101 R. cautleyoides 'Early Form' Hugh Nunn 

102 R. „Pennine Purple‟ Hartside Nursery 

Garden 

Addresses of Senders 

Avon Bulbs Ltd, Burnt House Farm, Mid Lambrook, South Petherton, Somerset TA 13 5HE 

Beeches Nursery, Village Centre, Ashdon, Saffron Walden, Essex CB10 2HB 

Bressingham Gardens, Bressingham, Diss, Norfolk PI22 2AB 

Mr R Bream, National Plant Collection Holder, Stevenshill, Harnage, Shrewsbury, Shropshire SY5 6EG 

Broadleigh Gardens, Bishops Hall, Taunton TA4 1AE 

Flowers By Design, 12 Roman Row, Whichford, Shipston on Stour, Warwickshire CV36 5PJ 

Hopleys Plants Ltd, High Street, Much Hadham, Herts SG10 6BU 

Hugh Nunn, Orchard Close Nursery, 71 Village Street, Harvington, Evesham, Worcestershire WR11 8NQ 

Mary Green, The Walled Garden, Off Monteagle Drive, Hornby, Lancaster LA2 8LD 

Mr B Mathew, c/o Trials Office, RHS Garden Wisley, Woking, Surrey GU23 6QB 

Proper Plants, Penknight, Lostwithiel, Cornwall PL22 OJD 

Royal Botanic Garden Kew, Richmond, Surrey TW9 3AB 

Sampford Shrubs, Sampford Peverell, Tiverton, Devon EX16 7EN, UK. 

Mr R Zijerveld, Turfspoor 180, 2165AX Lisserbroek, The Netherlands 

With thanks to the members of the Rock Garden Plant Trials Assessment Panel for their time and 

expertise: 

M. Randall (Chairlady) 

P. Erskine (Vice Chairman) 

J. Amand 

R. Bathe 

J. Bishop 

C. Brickell 

R. Drew 

A. Edwards 

T. Hall 

B. Mathew 

J. McGregor 

M. Sheader 

M. Upward 


Source: Trials Office, The Royal Horticultural Society Garden, Wisley, Woking, 

Surrey GU23 6QB 

e-mail: trials@rhs.org.uk. 

More information about RHS Trials and other colour illustrated reports can be 

found on the RHS Website : http://www.rhs.org.uk/Plants/Plant-trials-and-awards

Roscoea

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