Pocket Botanist
Check these first
- Observe the plant's position relative to the sun.
- Measure the amount of direct light the plant receives daily.
- Check if nearby plants are shading your sorghum.
Likely causes
Insufficient Light
Most likelyHow to tell: The plant has long, thin stems with large gaps between the leaves. It may also lean heavily toward the nearest light source.
What to do: Move the plant to a spot that receives full, direct sun for at least 6 to 8 hours a day. If growing indoors, place it directly in a south facing window. You may need to use a grow light if natural light is limited.
Crowding
PossibleHow to tell: The plants are growing very close together and competing for light, resulting in thin and weak stalks.
What to do: Thin out the seedlings to provide adequate spacing. Ensure each plant has enough room for air circulation and light exposure.
Find out what's wrong with your sorghum
The list above covers the usual causes. Pocket Botanist looks at a photo of your actual plant and tells you the likely cause, how serious it is, and what to try first. Identification and a health check are free.
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When to worry
Leggy growth is a sign of stress that will weaken the stalk and reduce grain production. It is not normal for this plant to be thin and floppy.
Stopping it coming back
Provide full sun exposure from the start. Ensure proper spacing between plants to prevent competition for light.
Keep your sorghum healthy from here
Save your plant in Pocket Botanist and you get care reminders timed for this plant, plus a care history that shows what worked. Identification and a health check are free.
Questions people ask
- Will my plant fill out if I move it to more light?
- The existing leggy growth will not thicken, but new growth will be stronger and more compact. You can stake the plant to provide support while it grows.
- Does sorghum need full sun?
- Yes, sorghum requires full sun to develop strong stalks and healthy grain. Anything less than full sun will cause the plant to stretch.
More problems with Sorghum
- Why does my sorghum have spots on its leaves?
- Why is my sorghum not producing flowers or grain?
- Why are there bugs on my sorghum plant?
- Why are my sorghum leaves turning yellow?
- Why are my sorghum leaves turning brown at the tips?
- Why is my sorghum plant drooping?
- Why is my Sorghum bicolor showing signs of root rot?
- Why are my Sorghum bicolor leaves curling?
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.