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Black nightshade · Solanum nigrum

Why is my black nightshade dropping its leaves?

Leaf drop is a sign that your plant is stressed, often due to sudden changes in its environment. Check the soil moisture and temperature to find the cause.

Check these first

  1. Check the soil moisture level with your finger.
  2. Look closely at the stems and leaf undersides for small insects.
  3. Observe if the plant has been moved to a new location recently.

Likely causes

  1. Water stress

    Most likely

    How to tell: The leaves wilt and turn crispy before falling off. This happens when the soil dries out completely between waterings.

    What to do: Water your plant every 3 to 7 days to keep the soil consistently moist. Do not let the root ball dry out entirely.

  2. Aphid infestation

    Possible

    How to tell: It is less common for this plant, but usually caused by a heavy colony of aphids sucking sap from the stems. You will see small clusters of insects on the new growth.

    What to do: Spray the plant with a gentle stream of water to knock the aphids off. If they persist, use an insecticidal soap once a week until they are gone.

Find out what's wrong with your black nightshade

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

Minor leaf drop during a heatwave is a normal reaction to stress. If the plant is losing most of its foliage, it is in serious trouble.

Stopping it coming back

Keep the plant in a stable environment away from cold drafts or intense heat sources. Monitor for pests regularly to catch them early.

Keep your black nightshade 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.

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Questions people ask

Will the leaves grow back?
The plant will grow new leaves once the stressor is removed and conditions improve. It may take a few weeks to see new growth.
Is leaf drop always bad?
Sometimes a plant drops a few leaves when adjusting to a new home. If it stops after a week, it is just settling in.

More problems with Black nightshade

Back to the Black nightshade 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.