Does my vine need more fertilizer?

Maybe, but check the pH first. If the pH is wrong, the vine cannot absorb the fertilizer you already gave it.

Can I fix yellow leaves by spraying them?

Foliar sprays can provide a quick boost, but they do not fix the root cause. You must correct the soil conditions for long term health.

Muscadine grape: yellow leaves, causes and fixes

Check these first

Check the soil moisture level with your finger.
Look at the leaf veins to see if they are still green.
Test your soil pH level.

Likely causes

Iron Chlorosis
Most likely
How to tell: The leaves turn yellow while the veins remain green. This happens when the soil pH is too high for the vine to absorb iron.
What to do: Test your soil pH and aim for a range of 6.0 to 6.5. Apply chelated iron to the soil if the pH is correct but the yellowing persists.
Overwatering
Possible
How to tell: The entire leaf turns yellow and may feel soft or limp. The soil will feel soggy or swampy to the touch.
What to do: Stop watering immediately and let the top 2 inches of soil dry out. Ensure your planting site has good drainage and is not in a low spot where water pools.

Yellow leaves on other plants

Find out what's wrong with your muscadine grape

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

Yellowing is a concern if it affects new growth or causes the leaves to fall off prematurely. Some yellowing on the oldest, lowest leaves is normal as the vine ages.

Stopping it coming back

Maintain a consistent watering schedule and test your soil annually to ensure the pH stays in the ideal range.

Muscadine grape: yellow leaves? Check yours with a photo

Every plant is a little different. Take a photo of your muscadine grape 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

Does my vine need more fertilizer?: Maybe, but check the pH first. If the pH is wrong, the vine cannot absorb the fertilizer you already gave it.
Can I fix yellow leaves by spraying them?: Foliar sprays can provide a quick boost, but they do not fix the root cause. You must correct the soil conditions for long term health.

Guides to these causes

Chlorosis

Why are my muscadine grape leaves turning yellow?

Check these first

Not sure what's wrong with your muscadine grape?