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Snow peas are typically easy to grow, but there are several things that may cause the plant to stop blooming. Problems can include pests, soil nutrient levels and temperature.
Soil Considerations
Peas are in the legume family, and plants in this family add nitrogen to the soil. Too much nitrogen will cause the pea plant to have a lot of green leafy growth but few, if any, blossoms. Choose a fertilizer with a low nitrogen level.
Effects of Pests
Pea thrips are tiny yellow or black insects which attack the flower buds and cause them to wither.
Other Pests
Birds also love the blossoms of pea plants and may be plucking them off before they have a chance to be pollinated.
Temperature
Peas thrive in cool weather. If the weather gets too hot the pea plant will stop producing flower buds and the plant itself will look rangy with few leaves.
Water Requirements
Pea plants require more water while they are blooming, so make sure your plant gets extra water when you are expecting blooms.
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