Will my plant grow back if it loses all its leaves?

If the roots are still healthy and moist, the plant may send up new growth from the base. Keep caring for it and wait for signs of life.

Can I overwater my phlox?

Yes, while they like moisture, they do not like sitting in soggy soil. Ensure your soil drains well to prevent root issues.

Why is my Wild Blue Phlox dropping leaves? Causes and fixes

Check these first

Touch the soil to see if it is dry.
Inspect the base of the stems for signs of rot.
Check the location for excessive sun exposure.

Likely causes

Drought stress
Most likely
How to tell: The leaves feel dry, brittle, and crispy before they fall off the stems. The soil surface will feel dusty and bone dry to the touch.
What to do: Water the plant deeply until moisture reaches the root zone. Apply a 2 inch layer of organic mulch around the base to help retain soil moisture. Check the soil every 3 days during hot spells.
Heat exhaustion
Possible
How to tell: The plant wilts during the hottest part of the day and leaves turn yellow or brown before dropping. This often happens if the plant is getting too much direct afternoon sun.
What to do: Provide temporary shade with a garden cloth during peak heat hours. Move the plant to a spot with more afternoon shade if it is in a container. Ensure the soil remains consistently moist.

Leaf drop in other plants

Find out what's wrong with your wild blue phlox

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

It is normal for the plant to lose a few lower leaves as it ages, but losing large sections of foliage indicates a serious water issue. If the entire plant is dropping leaves rapidly, it may be beyond recovery.

Stopping it coming back

Keep the soil consistently moist and apply a layer of mulch to keep the roots cool.

Wild Blue Phlox: leaf drop? Check yours with a photo

Every plant is a little different. Take a photo of your wild blue phlox 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

Will my plant grow back if it loses all its leaves?: If the roots are still healthy and moist, the plant may send up new growth from the base. Keep caring for it and wait for signs of life.
Can I overwater my phlox?: Yes, while they like moisture, they do not like sitting in soggy soil. Ensure your soil drains well to prevent root issues.

Guides to these causes

Dehydration

Why is my Wild Blue Phlox dropping leaves?