A dictionary of modern gardening - University Library

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ONI 403 R A
each side of every two rows, to which a I Half-hardy herbaceous. Division. Sandy
string is to be fastened throughout the loam and peat.
whole length, a few inches below the OPHIOXYLON serpentinum. Stove
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heads, to serve as a support and prevent evergreen shrub. Cuttings. Sandy loam
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their being broken down. The seeds and peat.
are ripe in August, which is intimated OPHRYS. Ten species. Hardy and
by the husks becoming brownish; the half-hardy orchids. Seed. Chalky loam
heads must then be immediately cut
otherwise the receptacles will open and
and peat.
OPLOTHFXA. Two species.
shed their contents. Being spread on O. florodana is hardy herbaceous, incloths
in the sun, and during inclement] creased by division. 0. interivpta is a
weather they soon become perfectly stove biennial, by seed. Both require
dry, when the seed maybe rubbed out, loam and peat.
cleaned of the chalf, and, after remain- OPUNTI.\.. Eighty-seven species,
Stove cacti, except 0. fragilis and 0.
ing another day or two, finally stored. |
It is of the utmost consequence to em- missouriensis, which are hardy and the
;
ploy seed of not more than two years O. media, 0. polyacantha,
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half-hardies,
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old, otherwise not more than one in and O.vxtlgaris. Slips, slightly dried;
fifty will vegetate. The goodness of! sandy peat.
seed may be easily discovered by fore- ORACH, Atriplex hortensis, is
ing a little of it in a hot-bed or warm cooked and eaten in the same manner
water a day before it is employed ; a as spinach, to which it is much prefersmall
white point will soon protrude if red by many persons, although it be
it is fertile.
ONION-FLY
Eumfirus.
See Anthomyia and
longs to a tribe whose wholesonieness
is very suspicious.
Soil and Situation. — It flourishes
best in a rich moist soil, and in an open
compartment. Those, however, of the
autumn sowing require a rather drier
ONISCUS. 0. asellus, O. armadillo.
Woodlice.
The first is most easily distinguished
from the second by its not rolling up in
a globular form when at rest. They
are found in old dry dunghills, cucum-
soil.
Soirins;.—It may be sown about the
end of September, and again in the
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ber frames, &c., and they are injurious spring for succession. The sowing to
to many plants, fruits, &c., by gnawing be performed in drills six inches apart,
off the outer skin. Gas lime will expel The plants soon make their appearance.
them from their haunts, and two boards being of quick growth. When they are
or tiles kept one-eighth of an inch about an inch high, they must be thin-
apart form an excellent trap. Gard.
Chron.
ONOBROjVIA. Five species. 0.
ned to six inches asunder, and those
removed may be planted out at the
same distance in a similar situation, and
glaucum is a hardy annual, and O. ar- watered occasionally until established.
borescens, a green-house shrub, the At the time of thinning, the bed must
others hardy herbaceous. Seed, cuttings,
or divisions. Common soil.
ONOBRYCHIS. Saititfoin. Twenty-
be thoroughly cleared of weeds, and if
they are again hoed during a dry day,
when the plants are about four inches
three species. Hardy herbaceous. Seed. high, they will require no further at-
Chalky loam.
ONOCLEA. Two species. Hardy
tendance than an occasional weeding.
For early production, a sowing may be
herbaceous. Seed and division. Sandy
loam and peat.
ONONIS. Thirty-seven species.
in a moderate hot-bed at the same time
as those in the natural ground. The
leaves must be gathered for use whilst
Mostly hardy annuals and shrubby young, otherwise they become stringy
j)lant3. Seed or cuttings. Loam.
ONOSMA. Sixteen species. Hardy
and worthless.
To save Seed.—Some plants of the
herbaceous, except the stove O. triner- spring sowing must be left ungathercd
vum. Seed. Rich chalkv loam.
O N O S M O D I U M . Two species.
from, and thinned to about eight inches
apart. The seeds ripen about the end
Hardy herbaceous. Seed. Rich light of August, when the plants must be
loam.
OPHIOPOGON. Three species.
pulled up, and when perfectly dry rubbed
out for use.