Pocket BotanistCheck these first
- Observe how many hours of direct sun the area gets.
- Check if the foliage is being shaded by nearby plants.
- Count how many years it has been since you last divided the bulbs.
Likely causes
Insufficient light
Most likelyHow to tell: The plant produces healthy leaves but no flower buds. This often happens if trees or shrubs have grown and created too much shade.
What to do: Move your bulbs to a spot that gets full sun to partial shade. Ensure they receive at least 6 hours of direct light during the spring.
Bulb overcrowding
PossibleHow to tell: The clump has become very dense over several years. The bulbs are competing for nutrients and space.
What to do: Dig up and divide the clumps after the foliage has died back. Replant the largest bulbs with at least 3 inches of space between them.
When to worry
If the plant is young, it may take a season to settle in. If it has been in the same spot for 3 years without flowers, it is time to intervene.
Stopping it coming back
Divide your iris clumps every 3 to 4 years to keep the bulbs vigorous and blooming well.
Not sure which one it is? Photograph your netted iris.
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 my iris?
- A light application of balanced bulb fertilizer in early spring can help. Do not overfeed, as this can encourage leaves at the expense of flowers.
- Why did my iris bloom last year but not this year?
- The bulbs may have exhausted their energy or the weather was too cloudy. Ensure they get enough sun to store energy for next year's blooms.
More problems with Netted iris
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.