Pocket BotanistCheck these first
- Verify that the plant is getting at least 6 hours of direct sun.
- Recall when you last pruned the stems.
- Check for signs of pests that might be eating the buds.
Likely causes
Late Pruning
Most likelyHow to tell: The plant is healthy and green but shows no signs of buds by late August. You may have pruned it after mid-July.
What to do: Stop all pruning by the end of June. Pruning after this point removes the developing flower buds.
Insufficient Light
Most likelyHow to tell: The plant is growing well but remains strictly vegetative. It does not produce any flower buds even in late summer.
What to do: Ensure the plant is in a location with full sun. If nearby trees have grown and created shade, you may need to move the aster to a sunnier spot.
When to worry
If the plant has not flowered by late September, it will likely not bloom this year. It is normal for young plants to take a season to establish before blooming well.
Stopping it coming back
Keep your pruning schedule consistent and ensure the plant has a full sun location.
Not sure which one it is? Photograph your new england aster.
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
- Do I need to fertilize to get more flowers?
- Usually not. Over-fertilizing can actually lead to more leaves and fewer flowers. Focus on light and proper pruning instead.
- Will my aster bloom if I move it now?
- Moving a plant while it is trying to bud can stress it and prevent flowering for the current season. It is best to move it in early spring.
More problems with New England aster
Back to the New England aster guide
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.