How to Identify Lemon Tree Diseases

Beginner 45 min 17 steps 11249 views Rating: 3.8/5 Published: 2026-01-18

Watch out for thinning leaves and dead branches.. Look for blotchy yellowing on the leaves.. Check for small, lopsided fruits.

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Steps

1

Watch out for thinning leaves and dead branches.

Step 1

Watch out for thinning leaves and dead branches.

2

Look for blotchy yellowing on the leaves.

Step 2

Look for blotchy yellowing on the leaves.

3

Check for small, lopsided fruits.

Step 3

Check for small, lopsided fruits.

4

Observe whether the fruits remain green at the blossom end.

Step 4

Observe whether the fruits remain green at the blossom end.

5

Destroy infected trees according to your extension office's instructions.

Step 5

Destroy infected trees according to your extension office's instructions.

6

Check the leaves for lesions with concentric rings.

Step 6

Check the leaves for lesions with concentric rings.

7

Look for circular lesions on the fruit.

Step 7

Look for circular lesions on the fruit.

8

Make note of excessive fruit drop.

Step 8

Make note of excessive fruit drop.

9

Watch for dead shoots and thinning leaves.

Step 9

Watch for dead shoots and thinning leaves.

10

Ask your local extension office about how to destroy infected trees.

Step 10

Ask your local extension office about how to destroy infected trees.

11

Look for dark brown or reddish spots or lesions on the fruit.

Step 11

Look for dark brown or reddish spots or lesions on the fruit.

12

Check for fruit dropping before it's ripe.

Step 12

Check for fruit dropping before it's ripe.

13

Watch for reddish-brown lesions on the leaves.

Step 13

Watch for reddish-brown lesions on the leaves.

14

Manage black spot infections with anti-fungal treatments.

Step 14

Manage black spot infections with anti-fungal treatments.

15

Look for warty pink or brown scabs on the fruit.

Step 15

Look for warty pink or brown scabs on the fruit.

16

Check for raised bumps on leaves with a depression on the underside.

Step 16

Check for raised bumps on leaves with a depression on the underside.

17

Treat your lemon tree with 3 fungicidal spray applications in the spring.

Step 17

Treat your lemon tree with 3 fungicidal spray applications in the spring.

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