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Pruning Calendar

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Pruning Calendar WINTER SPRING SUMMER FALL After Flowering Acer-Maple Abelia Buxus-Boxwood Buxus-Boxwood Akebia Azalea Actinidia-Kiwi Albizia-Mimosa as growth Chaenomeles-Quince Carpinus-Hornbeam Amelanchier- begins early summer Cornus-Dogwood Buddliea-Butterfly Bush Serviceberry Aucuba Cornus mas-Cornelian Malus-Crabapple Choisya-Mexican Orange Deutzia Berberis-Barberry Callicarpa-Beautyberry Cherry Parthenocissus-Boston Betula-Birch Camellia Ilex-Holly Ivy Elaeagnus-Russian Olive, Silverberry Campsis-Trumpet Campsis-Trumpet Creeper Wisteria Paeonia suffruticosa- Escallonia Creeper Caryopteris-Bluebeard Tree Peony Euphorbia-Spurge Carpinus-Hornbeam Ceanothus-California Lilac Forsythia Clerodendron-Glorybower Celastrus-Bittersweet before growth Helianthemum-Sunrose Chimonanthus- Hibiscus Wintersweet Cistus-Rockrose Hydrangea Cornus-Dogwood Cornus alba-Tatarian Jasminum-Jasmine Corylus-Filbert Dogwood Kerria Cotoneaster Cotinus-Smoke Tree Kolkwitzia-Beauty Bush Euonymus Evergreen ferns Lonicera japonica- Malus-Crabapple Hamamelis-Witch Hazel Honeysuckle Sambucus-Elderberry Hibiscus-late spring Magnolia Stauntonia Lavatera-Tree Mallow Mahonia-Oregon Grape Wisteria Lavendula-Lavendar Passiflora-Passionflower Leycesteria-Himalayan Proper pruning cut Philadelphus-Mock Orange Roses - Presidents Day Honeysuckle Pieris Box Lonicera nitida- Rhododendron Honeysuckle ****We have separate handouts Ribes-Currant Ornamental grasses Rosemary Photinia on pruning fruit trees and small Schizophragma-Climbing Pinus-Pine when candling fruits. Please see our Hydrangea Pyracantha-Firethorn Information desk. Syringa-Lilac Salix caprea-French Pussy Viburnum-has specific pruning Willow ** Conifer pruning is often requirements Santolina Weigela Spiraea species dependant, please use Wisteria Trachelospermum- references for detail. Confederate Jasmine INTRODUCTION GENERAL PRUNING GUIDELINES Here in the Portland area, Pruning we can grow a great diversity Early blooming plants are generally pruned of plants. A large part of after flowering. keeping these plants in shape is the task Borderline hardy plants should be pruned of pruning. This pamphlet lists general after the last frost date (April 15th in Calendar pruning times for a large range of trees, Portland). shrubs and vines. Keep in mind that pruning times are determined by the Hedges can be pruned three times between Guidelines, Tips and Timing for cycle of the plant, not necessarily the season of spring and fall. Renovation pruning is done Pruning Trees, Shrubs and Vines the year. For specific plants that are not in late winter to early spring. listed here, please refer to the references Do not prune pithy or hollow stemmed given on the back of this pamphlet. plants (such as figs or bamboo) during rainy weather, to avoid potential rot. GENERAL RULES THAT Use the proper tool for the job: loppers for ARE FOLLOWED FOR larger cuts, etc. ALL PRUNING Always use sharp tools. Rule #1: always cut at a 45° angle so water cannot pool on the cut REFERENCES and cause rot (see diagram). The American Horticultural Society Pruning & Rule#2: Never remove more than Training- Brickell & Joyce 1/3 of the plant in one session. Rule #3: Always be sure that the The Sunset Garden Book tool you are using is sharp. A Pruning Simplified- Hill sharp tool will make the job easier and keep the wounds clean. Pruning How-To Guide for Gardeners- Stebbins & MacCaskey Happy Pruning! Gardening with Conifers- Bloom .
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