Pepper flower drop in hot weather

Pepper flowers often drop when days reach about 90°F or nights stay above about 75°F. Dry soil adds to the stress.

When we suggest this

• ForecastHighs of about 90°F or more for 3 or more days in a row or nights that stay at or above about 75°F are forecast for today or the next 3 days.
• Your noteYour note: stage is flowering or fruit forming or ready to harvest; or no stage noted yet and planted at least 30 days ago.

What would stop us suggesting it

• When the forecast heat ends.
• When you mark it Done or Doesn't apply. "Doesn't fit my setup" stops it for that plant this season.

What to do

1. Push a finger into the soil near the plant. If it's dry at the first knuckle, water deeply at the base.
2. Expect some flowers or tiny peppers to drop while highs are near 90°F. There's not much to do but wait it out.
3. A layer of mulch helps the soil stay evenly moist.

What we can't know

• How moist the soil is at your plants.
• Whether shade or wind at your spot makes it cooler or hotter than the forecast.

Sources agree on about 90°F days; for nights they give above 70°F (UMN) to above 75°F (Cornell, Maryland). We use 75°F nights and three days in a row to avoid tasks for brief heat. The 30-day fallback for plants with a known transplant date but no stage note is an estimate from 70–85 days to harvest and 35–45 days from flower to full color.

Where this advice applies

All US regions.

Any US garden with a run of days near 90°F or warmer, or nights that stay near 75°F or warmer.

In the low deserts and much of the Gulf South, heat like this is normal for much of the summer, so expect this task to stay open through long hot spells.

Exceptions

• Plants you've marked finished for the season.
• Young plants that haven't flowered yet.

Reviewed

Sources checked Sept 2026 · awaiting expert review

Gardenplanner research (AI-assisted), pending extension-qualified review

Rule id and version: pepper.heat-flower-drop@1