Gadenin日本語Get the appCheck these first
- Does the rot start at the blossom end or from a wound?
- Was there heavy rain or uneven watering just before the fruit split?
- What were the temperatures and pollination conditions when it flowered?
Most likely causes
From the pests and diseases recorded for this plant, the ones whose symptoms match, most serious first. Symptoms alone rarely confirm a cause, so use the linked page to check the signs and treatment.
Bacterial Speck
Small dark brown spots ringed by a yellow halo form on the leaves, and heavy infection burns off the whole leaf. Fruit carries scattered black pinpoint specks.
How to identify and treat: Bacterial SpeckBacterial Canker
Leaf margins scorch and die back, and splitting the stem reveals browned vascular tissue. Scabby, bird's-eye lesions form on fruit and shoots.
How to identify and treat: Bacterial CankerTomato Mosaic Virus
Light and dark mosaic appears on the leaves, which narrow, twist and crinkle. Fruit ripens unevenly and browns internally, cutting both yield and quality.
How to identify and treat: Tomato Mosaic VirusOther possible causes
Show the other 23
- Tomato Yellow Leaf Curl — New leaves stay small, turn yellow and curl upward at the margins. The plant becomes stunt…
- Tomato Spotted Wilt — Brown necrotic spots and ring patterns appear on the leaves and the growing tips shrivel a…
- Gray Mold — Water-soaked brown lesions form on flowers, fruit and leaves, densely covered by a fuzzy g…
- Late Blight — Dark green water-soaked lesions appear on the leaves and expand quickly into brown dead ti…
- Tomato Leaf Mold — Pale yellow indistinct patches form on the upper leaf surface with a velvety gray-brown mo…
- Helicoverpa Bollworms — Round holes are bored into fruit and buds, the inside eaten out and packed with frass. Rot…
- Blossom End Rot — The blossom end of the fruit turns water-soaked, then dark brown, and sinks in. It is most…
- Fruit Cracking — Radial or concentric cracks open around the shoulder and calyx of the fruit. Rot organisms…
- Puffy Fruit — The fruit looks normal outside but is hollow inside when cut, feeling light and angular in…
- Etiolation — Internodes stretch long, stems are thin and leaf color is pale. The plant topples easily a…
- Excess Nitrogen — Leaves are large and dark green and stems grow thick but soft. Flowering and fruit set dec…
- Root Rot — Fine roots rot brown to blackish brown, growth stops and the lower leaves yellow. The plan…
- Leafminer Flies — Winding white tunnels run through the leaf with the larva at the head of the mine. Heavy m…
- Stink Bugs — Small feeding punctures on fruit become sunken or turn spongy and discolored. On legumes t…
- Sunscald — The sun-facing side of the fruit bleaches white to pale yellow, then dries into a sunken l…
- Bacterial Spot — Small water-soaked spots appear on the leaves, later turning brown with yellowing around t…
- Cucumber Mosaic Virus — New leaves show a yellow-green mosaic, crinkle, and the whole plant becomes stunted. Fruit…
- Vine Overgrowth — Leaves grow large and dark green and the vines keep running vigorously, but no flowers or …
- Bacterial Soft Rot — The crown or the head becomes water-soaked and soft, then collapses into a slimy mush. The…
- Anthracnose — Light brown to dark brown round lesions with sharp margins form on leaves and fruit, sligh…
- Sclerotinia Rot — The crown, stem or head rots in a water-soaked way and is covered in white cottony myceliu…
- Ring Rot — The bark of branches and trunk becomes rough and warty, serving as the inoculum source. Fr…
- Root-lesion Nematode — Elongated blackish brown necrotic lesions form on the root surface and fine roots rot away…
Other symptoms on this plant
What other growers did about it
A page like this one can tell you what tomato fruit cracking, rot and deformities is and what to try. What it cannot tell you is what actually happened to someone who had it on the same plant, at the same point in the season, and what they did next.
Gadenin is a free garden journal built around that. You photograph the plant, tag what you are seeing, and the entries line up by date for each plant you grow.
- Tag the problem and the app tells you how many other growers have logged the same thing on the same plant.
- Growers who make their records public can be followed, so you can read what they did and how it turned out.
- Next season your own entries come back at the same point in the year, so you check the plant before it starts.
Free on iPhone. Recording, tagging and reading public records cost nothing.