African Violet Buds Turning Brown and Failing to Open

Your violets were blooming beautifully in filtered light. Now, buds are blotched with brown and won't open—though leaves look fine. You water once weekly on weekends.

Two Likely Causes

1. Water on Buds. Even careful bottom-watering can splash water onto developing buds, causing brown spotting and blast (bud drop). Water on petals also invites botrytis.

2. Low Humidity. This is the most common reason buds form but don't open. African violets need 50–60% humidity for proper flower development.

Fixes

• Water carefully: Use a long-spout can for bottom-watering; avoid splashing.
• Raise humidity: Place pots on pebble trays—shallow saucers filled with pebbles and water kept just below the pot bottom. Refill every 2–3 days. Group plants together. Run a humidifier if you have many violets.
• Preventive spray: A weekly light mist with diluted all-purpose insecticide (if pests are suspected) or just neem oil can't hurt, but humidity is the primary fix.

Consistent humidity yields longer-lasting blooms and prevents future bud blast. Give it a few weeks; new buds should open fully.