Flowers
African violet 6.0-7.0
Alyssum, 6.0-7.5
Begonia 5.5-7.0
Calendula 5.5-7.0
Carnation 6.0-7.5
Chrysanthemum 6.0-7.5
Geranium 6.0-8.0
Shrubs
Almond, flowering 6.0-7.0
Azalea 4.5-5.0
Barberry, Japanese 6.0-7.5
Burning bush 5.5-7.5
Butterfly bush 6.0-7.5
Boxwood 6.0-7.5
Camellia 4.5-6.5
Daphne 6.5-7.5
Gardenia 5.0-6.0
Holly, American 5.0-6.0
Holly, Japanese 5.0-6.5
Ivy 6.0-8.0
Lilac 6.0-7.5
Leucothoe 4.5-6.0
Magnolia, Southern 5.0-6.0
Magnolia, sweetbay 4.0-5.0
Mountain Laurel 4.5-6.0
Pachysandra 4.5-5.5
Pieris 5.0-6.0
Quince, flowering 6.0-7.0
Rhododendron 4.5-6.0
Rose, hybrid tea 5.5-7.0
Snowball bush 6.5-7.5
Fruits/Nuts
Apple 5.0-6.5
Apricot 6.0-7.0
Blueberry, high bush 4.0-5.0
Cherry, sour 6.0-7.0
Cherry, sweet 6.0-7.5
Crab apple 6.0-7.5
Peach 6.0-7.5
Raspberry, red 5.5-7.0
Strawberry 5.0-6.5
Walnut, black 6.0-8.0
Trees
Ash, white 6.0-7.5
Aspen, American 3.8-5.5
Beech 5.0-6.7
Birch, European 4.5-6.0
Crape Myrtle 5.0-6.0
Dogwood 5.0-7.0
Spruce, Colorado 6.0-7.0
Sycamore 6.0-7.5
Fir, balsam 5.0-6.0
Fir, Douglas 6.0-7.0
Hemlock 5.0-6.0
Maple, sugar 6.0-7.5
Oak, black 6.0-7.0
Oak, pin 5.0-6.5
Oak, white 5.0-6.5
Pine, loblolly 5.0-6.0
Pine, white 4.5-6.0
Vegetables
Asparagus 6.0-8.0
Beets 6.0-7.5
Broccoli 6.0-7.0
Cabbage 6.0-7.5
Carrot 5.5-7.0
Cauliflower 5.5-7.5
Celery 5.8-7.0
Cucumber 5.5-7.0
Lettuce 6.0-7.0
Muskmelon 6.0-7.0
Onion 5.8-7.0
Potato 4.8-6.5
Rhubarb 5.5-7.0
Spinach 6.0-7.5
Tomato 5.5-7.5

 


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© Erv Evans, Consumer Horticulturalist
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