Can I bury a leggy stem to fix it?

Yes, you can gently bury the extra length of the stem in the soil. Winter squash will often grow new roots along the buried portion of the stem.

Will a leggy plant still produce fruit?

It might, but a weak, leggy plant will have a harder time supporting heavy squash. It is better to correct the light issues early so the plant can focus its energy on fruit production.

Winter Squash: leggy growth, causes and fixes

Check these first

Measure the hours of direct sunlight the plant receives each day.
Check if the plant is leaning toward a window or light source.
Inspect the distance between the plant and its neighbors.

Likely causes

Insufficient Sunlight
Most likely
How to tell: The stems look thin, pale, and stretched out with large gaps between the leaves. The plant is leaning heavily toward the nearest light source.
What to do: Move your container to a spot that gets at least 8 hours of direct sun daily. If you are growing indoors, place the plant directly under a high output grow light.
Overcrowding
Possible
How to tell: Plants are growing tall and thin because they are competing for space and light with neighbors. Leaves may look crowded and shaded by one another.
What to do: Thin out your seedlings or space your plants at least 3 to 5 feet apart. Proper spacing ensures every leaf gets the light it needs to grow thick, sturdy stems.

Leggy growth in other plants

Find out what's wrong with your winter squash

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.

When to worry

If the stem is so thin it cannot support the weight of the leaves, the plant may collapse. A little stretching is normal for seedlings, but mature plants should be sturdy.

Stopping it coming back

Provide full sun from the moment the seeds germinate and ensure adequate spacing between plants.

Winter Squash: leggy growth? Check yours with a photo

Every plant is a little different. Take a photo of your winter squash and Pocket Botanist tells you which cause is most likely, how serious it is, and what to try first. A few checks a day are free. Save the plant and you get care reminders timed for it.

Get the app · Or check it from a photo now, free

Questions people ask

Can I bury a leggy stem to fix it?: Yes, you can gently bury the extra length of the stem in the soil. Winter squash will often grow new roots along the buried portion of the stem.
Will a leggy plant still produce fruit?: It might, but a weak, leggy plant will have a harder time supporting heavy squash. It is better to correct the light issues early so the plant can focus its energy on fruit production.

Why is my winter squash plant growing so leggy?