Reasons for Tomato Flower Drop and Simple Solutions

Have you ever grown tomatoes and hit that heartbreaking moment when a plant is covered in flower buds but they just keep dropping? Don't panic! Today I'll walk you through solving the flower-drop problem step by step, so you can enjoy a steady supply of your own tomatoes with ease!

Causes of Flower Drop

Pollination failure: tomatoes are self-pollinating plants, but indoors there are no insects / or wind to help, the pollen cannot naturally reach the stigma, so pollination does not succeed.

Nutrient deficiency: a lack of phosphorus and potassium fertilizer directly affects flower bud differentiation, causing flowers to drop before they even open.

Water imbalance: during the flowering and fruiting stage, tomatoes need a surge of water; a lack of water makes the plant directly"sacrifice"its flowers to survive; but watering too often during the seedling stage leads to poor root development.

Solutions

1.For pollination failure, you can hold the brush head of an electric toothbrush close to the flower cluster and vibrate it for10seconds, or if growing outdoors simply shake the support frame to simulate natural wind, or gently flick the flower cluster with your finger.

2.For nutrient deficiency, you can bury a compound fertilizer around the edge of the pot to supplement nitrogen, phosphorus and potassium, and dilute monopotassium phosphate with water at1:1000to spray the leaves+drench the roots,7once every days.

3.For water imbalance, during the flowering and fruiting stage water thoroughly once the top1cmof the potting soil is dry; during the seedling stage, wait until the pot feels light and the soil is completely dry before watering.

Notes

1. Pollination success is highest between9-11in the morning, when the flowers are fully open; avoid working on overcast or rainy days and in the evening, as humid conditions easily cause pollen to clump.

2. Do not apply excessive nitrogen fertilizer (such as urea) during the flowering period, as it causes excessive stem and leaf growth and inhibits flower bud development; spray monopotassium phosphate in the evening to avoid scorching the leaves at high temperatures.

3. During the flowering and fruiting stage, avoid"half watering"; you must water until water comes out of the drainage holes at the bottom of the pot; tap water needs to sit for24hours for the chlorine to dissipate before use.

Common Questions

Q: What should I do if flowers still drop after pollination?  

A: Check whether the temperature is too high (>35°C) or too low (<15°C); abnormal temperatures affect pollen viability, so move the plant to an18-28°Cenvironment.

Q: Why does flower drop get worse after watering?  

A: It may be waterlogged roots suffocating! Check whether the pot's drainage holes are blocked, loosen the soil with a bamboo stick to improve air permeability, and if necessary take the plant out of the pot to check the roots.