Important pollen and nectar sources in eastern Mass.

Plant Name Bloom Yield Nectar/Pollen
Crocus 3/20 fair p
Maple, soft & hard 4/3 excellent n-p
Skunk cabbage 4/3 fair p
Willows, all 4/16 excellent n-p
Daffodils & Jonquils 3/10-5/10 fair p
Tulip 4/20 fair p
Dandelion 4/20 excellent n-p
Cherry, choke 4/22 undependable n
Plum, wild & domestic 5/10 fair n-p
Peach 5/20 undependable n-p
Strawberry 5/20 fair n-p
Apple, wild & domestic 5/20 good n-p
Locust, black 5/22 excellent n-p
Clover, white dutch 5/28 excellent n-p
Tulip poplar 5/28 excellent n-p
Holly, all ilex 5/28 excellent n
Raspberry & blackberry 5/28 excellent n-p
Blueberry 5/28 fair n
Clover, sweet yellow 6/7 excellent n-p
Sumac 6/12 good n
Horse Chestnut 6/12 good n-p
Clover, sweet white 6/18 good n-p
Milkweed 6/18 good p
European Linden 6/20 good n-p
Dogwood 6/25 fair n
Cucumber 7/1 fair n-p
Loosestrife 7/28 excellent n
Basswood, American Linden 7/24 good n
Winter Squash 7/25 poor n-p
Goldenrod 8/20 good n-p
Japanese bamboo 9/1 good n
Asters 9/5 good n-p