Why Do My Tomatoes Crack and Split?
Tomatoes crack when fruit absorbs water faster than its skin can expand, usually after dry soil is followed by heavy rain or irrigation. Keeping soil moisture steady is the most effective way to prevent new cracks and splits.
There are two common crack patterns. Circular cracks form around the stem end, while radial cracks run outward from the stem scar. Both are usually linked to sudden moisture changes, although radial cracking is often more associated with intense sun and rapid fruit growth.
Water tomatoes deeply and consistently rather than allowing plants to wilt and then soaking the bed. Check soil beneath the surface before irrigating, because a dry-looking surface can be misleading. Drip irrigation or a soaker-style system makes it easier to keep moisture even while keeping foliage dry.
Apply a 2 to 3 inch layer of organic mulch after soil has warmed. Mulch reduces evaporation, buffers soil moisture after rain, and limits soil splash. Keep a small gap around plant stems so the mulch does not hold constant moisture against them.
Harvest fruit promptly when it reaches mature color. Ripe fruit is more likely to split if it stays on the plant through a heavy rain. If a major storm is expected and fruit is close to ripe, picking it slightly early and allowing it to finish coloring indoors can reduce losses.
Cracked fruit is often usable if it is harvested promptly and the interior is firm and clean. Discard fruit with soft rot, mold, insect infestation, or a deep opening that has begun to decay. Do not leave split fruit on the plant, because it can attract pests and support rot organisms.
Variety matters. Some tomato types have naturally tougher skins or better crack tolerance than others, while very large fruits often crack more readily. In future seasons, choose varieties described as crack resistant, maintain even moisture from transplanting onward, and avoid excessive nitrogen that can encourage overly rapid growth.
Frequently asked questions
Can I eat tomatoes with cracks?
Use cracked fruit promptly if the crack is clean, the fruit is firm, and there is no decay. Cut away damaged areas and discard fruit that is soft, moldy, or infested.
Does too much rain cause tomato splitting?
Yes. Heavy rain after a dry period is a classic cause because roots take up water quickly and the fruit expands faster than its skin.
Will watering every day prevent cracks?
Not necessarily. Watering frequency should match soil type, weather, and plant size. The goal is even moisture without keeping soil saturated.
General guidance for US home gardens. Conditions vary by region and season; check with your local Cooperative Extension office for site-specific advice. Page updated Aug 4, 2026.