Diagnosing Fertilizer Burn on Young Container Tomatoes

Your cherry tomato seedlings show classic fertilizer burn symptoms: mottled, drying top leaves while lower foliage remains healthy. At just three weeks post-planting in Tampa's climate, these young plants are especially vulnerable to nutrient overload—even from organic products like your Natural Harvest fertilizer and Mater Magic (8-5-5).

Immediate Recovery Steps

The damage will self-correct as excess salts leach out. Keep pots consistently moist but not soggy—water deeply only when the top 2 inches of soil dry out, until water drains freely from the bottom. This encourages deep root growth rather than surface rooting.

Prevention for Future Plantings

• Hold off fertilizing until plants are well-established (4-6 weeks)
• Use half the recommended application rate for the first few feedings
• This applies to both synthetic and organic fertilizers
• Container plants are more susceptible than in-ground plantings

Your plants should recover fully with this adjusted care routine. The flowers indicate they're otherwise healthy and ready to produce once the stress passes.