Why are my tomatoes producing flowers that drop off instead of developing fruits? - Spokane, North Idaho News & Weather KHQ.com

By Garden Expert Bob Mauk from Northwest Seed & Pet

Why are my tomatoes producing flowers that drop off instead of developing fruits?

Why are my tomatoes producing flowers that drop off instead of developing fruits?

Blossom drop is caused most often by night temperatures below 55 º  F or above 75º F. If temperature does not seem to be a problem then the blossoms may not be getting pollinated due to a lack of bees or other pollinating insects. Tomatoes can be artificially pollinated with a hormone product know as Tomato Blossom Set .  This product is sprayed directly onto the blossoms to trigger fruit set. Another method that sometimes works is to flick the blossoms gently with your finger or vibrate the flower petioles (little stalk behind the blossom) with an electric toothbrush or something else that vibrates to disseminate the pollen.

Why do tomatoes get black spots at the blossom end of the fruit?

Blossom end rot comes from inadequate or irregularly supplied water. Irregular or inadequate water causes calcium to get tied up in the soil and become unavailable to the tomato plant. The result is the black spot on the blossom end of the fruit. Regular irrigation and the addition of calcium to the soil or as a calcium rich spray on the plants will solve this problem. Mulching your plants will also be helpful.

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