Vegetation Management and Maintenance Plan - Watsonville ...

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BOX ELDER Acer negundo DISTINCTIVE FEATURES This is a common deciduous tree along creeks and sloughs. The tree supports opposite compound leaves that hang from slender petioles (stems). Each leaf is pale green 2-4 inches long, and has three leaflets, each lobed with toothed margins. Winged seeds (samaras) form in late summer. Trees can reach 50 to 70 feet tall. BLOOMS Small, white, in drooping clusters, March - April. PREFERRED HABITAT along streams and edges of sloughs; also planted as large garden trees. Box elder trees were planted along upper Struve Slough. WESTERN SYCAMORE Platanus racemosa DESCRIPTION The statuesque tree is characterized by the white and gray jigsaw-like pattern to its bark and the multiple, twisting branches. The deciduous leaves are 5-10 inches wide, light green, deeply lobed, and when young have a velvety texture. Small clusters of flowers hang from the stems in spring, ripening into round, spiny fruits. Mature trees can reach up to 100 feet tall. BLOOMS Whitish in small clusters, March - April. PREFERRED HABITAT Upper edges of creeks and rivers where they are subject to infrequent flooding. Sycamores have been planted along upper Struve Slough.
BLACK COTTONWOOD Populus balsamifera ssp. trichocarpa . DISTINCTIVE FEATURES This deciduous tree forms a broad crown of spreading branches. The leaves are almost triangular in shape, 2-4 inches long, glossy green above and whitish beneath. The tree bark form furrows when mature, yet the branches are often whitish. The trees tremble in the wind, as they are related to quaking aspen. Small flowers yield tufts of cottony seeds that can be seen hanging from the branches in summer. Trees can range from 40 to 100 feet tall. BLOOMS Small whitish in clusters, February - April . PREFERRED HABITAT Black cottonwood is common along coastal streams; it grows along upper Watsonville Slough and is colonizing the wetland restoration sites. WILLOW Salix ssp. DISTINCTIVE FEATURES Several species of willow grow within in the Watsonville Slough system. All trees are deciduous, growing 20 to 45 feet in height. The leaves tend to be linear-shaped, 3-6 inches long, some with pointed leaves (yellow willow), others more rounded (arroyo willow). These fast-growing trees have hanging catkins which produce tiny seeds surrounded by cottony fluff. BLOOMS Yellowish-white, in hanging catkins February - April. PREFERRED HABITAT Wet areas along creeks, rivers, and along the edge of all sloughs in the Watsonville area; the most common tree species in the trail system area.
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Draft Watsonville Wetlands Trail Sy
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TABLE OF CONTENTS 1.0 INTRODUCTION
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CHAPTER 1.0 INTRODUCTION The Watson
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CHAPTER 2.0 INTRODUCTION TO WEEDS W
Page 13 and 14: assigned to each species. This rank
Page 18 and 19: CHAPTER 3.0 INVASIVE WEED MANAGEMEN
Page 20 and 21: General Rules for Grubbing • If t
Page 22 and 23: whipping is critical. However, loca
Page 24 and 25: applications will be needed to cont
Page 26 and 27: Table 4. Levels of Invasive Weed In
Page 32 and 33: 3.1.9 Active Revegetation Within th
Page 34 and 35: In addition, isolated patches of wi
Page 36 and 37: Table 7. Invasive Weed Treatment -
Page 38 and 39: Table 7. Invasive Weed Treatment -
Page 43 and 44: CHAPTER 4.0 RIPARIAN AND WETLAND MI
Page 45 and 46: Table 11. Lower Struve Slough Mitig
Page 47 and 48: Each year’s annual monitoring rep
Page 49 and 50: APPENDIX A Invasive Weeds within th
Page 51 and 52: WILD MUSTARD Brassica ssp. DISTINCT
Page 53 and 54: BULL THISTLE Cirsium vulgare DISTIN
Page 55 and 56: FENNEL Foeniculum vulgare DISTINCTI
Page 57 and 58: HARDING GRASS Phalaris aquatica REE
Page 59 and 60: CURLY DOCK Rumex crispus DISTINCTIV
Page 61 and 62: APPENDIX B Native Plants within the
Page 63: CALIFORNIA BUCKEYE Aesculus califor
Page 67 and 68: MUGWORT Artemisia douglasiana DISTI
Page 69 and 70: CALIFORNIA BLACKBERRY Rubus ursinus
Page 71 and 72: COMMON RUSH Juncus patens BOG RUSH
Page 73 and 74: APPENDIX C Volunteer Projects Veget
Page 75 and 76: DESCRIPTION OF WORK VOLUNTEER PROJE
Page 81 and 82: APPENDIX D Mitigation Area Maps Veg
Page 83 and 84: APPENDIX E Bucket Watering System V
Page 85: Georges' Bucket Watering System For
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