Pocket BotanistCheck these first
- Feel the soil two inches below the surface.
- Observe how many hours of direct sun the plant receives.
- Check if the container has proper drainage holes.
Likely causes
Insufficient Watering
Most likelyHow to tell: The soil feels dry to the touch an inch or two down, and the plant looks generally wilted.
What to do: Water your astilbe deeply every 2 to 4 days. Ensure the soil stays consistently moist but not waterlogged.
Excessive Sun Exposure
PossibleHow to tell: The brown tips appear on leaves exposed to the hottest part of the afternoon sun.
What to do: Move the plant to a spot with more shade. If it is in the ground, consider adding a layer of mulch to keep the roots cool.
When to worry
Worry if the browning spreads rapidly across the entire leaf. It is normal for older, lower leaves to brown slightly as the season ends.
Stopping it coming back
Keep a consistent watering schedule and apply organic mulch around the base to retain soil moisture.
Not sure which one it is? Photograph your astilbe.
This page lists the usual causes. Pocket Botanist looks at your actual leaf and tells you the likely cause, how serious it is, and what to try first. Identification and a health check are free.
Questions people ask
- Can I trim off the brown tips?
- Yes, you can snip them off with clean scissors for aesthetic reasons. It will not hurt the plant.
- Does my astilbe need more water in summer?
- Absolutely. Hot weather causes faster evaporation, so check the soil daily during heat waves.
More problems with Astilbe
This article was generated with AI from the plant’s care profile and is general information, not horticultural advice. Read about how we build these guides.