Tomato Plants With Yellow Leaves And Black Spots

Filed Under: Fertilizing, Vegetables, Diseases and Fungus · Keywords: What, Causes, Yellow Leaves, Black Spots, Tomato, Plants · 4911 Views
What is causing my tomato plants to have yellow leaves and black spots? Is it too much water? Not enough water? Does anyone have a recommendation for fertilizing? Thank you- Jason


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Answer #1 · Gardenality.com's Answer · Are all of your tomato plants doing this? If so, it could be from over watering the plants. Try cutting back on watering, allowing the soil to dry out before watering again. Use the finger test to check for soil moisture. I(f moist or wet, wait another day to water.

If after cutting back on the watering you plants don't respond well and continue to rapidly decline, it could also be fusarium wilt. This is a fungal disease that lives in the soil. It infects only tomatoes and is spread around by infected soil, mulch, tools, and plants. If you cut back on watering and your plants continue to decline or even die out, it could be fusarium wilt.

Unfortunately, there's no chemical solution or other remedy for fusarium wilt. The best way to prevent it is to remove and destroy infected plants right away - don't compost them, get rid of them completely. Did you plant your tomatoes this year in the same location in the garden you planted them last year? If so, in the future, don't plant tomato plants in the same place. A three-year rotation plan is best.

Do you know what varieties you planted? The only sure way to avoid fusarium wilt is to plant resistant varieties. These are ones with an 'F' designation after its name in seed catalogs or on plant tags. Many plants will have VF or VFN after the name. The F is fusarium wilt.

So, I'd say to cut back on the watering for a week or two to see what happens. If you lose these plants, it's still not to late to plant a second late crop, if you can find the plants. Just make sure not to plant the new plants where the old ones were planted.

Hope this info helped.)



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