Planning reference

Tomato Catfacing vs Cracking

Separate malformed blossom-end scars and cavities from radial or concentric tomato cracks before changing transplant timing, watering, pruning, fertilizer, harvest timing, or food-use decisions.

What each tomato fruit signal means

Tomato catfacing

Tomato catfacing is a physiological fruit disorder where tomatoes become flattened, malformed, puckered, scarred, or cavity-filled, usually around the blossom end after flowers or buds are disturbed.

Tomato cracking

Tomato cracking is a fruit-skin splitting disorder where radial cracks run outward from the stem or concentric cracks ring the shoulder, often after dry-to-wet moisture swings or rapid fruit growth.

Misshapen blossom-end scars and cavities

Catfacing points toward a problem during flowering or early fruit formation: corky blossom-end scar tissue, lobed fruit, deep crevices, holes, cavities, and early-cluster damage on large-fruited tomatoes.

Radial or concentric cracks near the stem

Cracking points toward fruit expanding faster than the skin can stretch: cracks at the stem end, shoulder splitting, persistent rainfall, irrigation after dry weather, heavy dew, ripeness, variety susceptibility, or exposed fruit.

Cool bloom weather vs moisture swings

Catfacing management starts before or during bloom with warm transplant timing and variety choice, while cracking management focuses on uniform moisture, mulch, canopy cover, harvest timing, and crack-resistant varieties.

Tomato fruit disorder workflow

Diagnose shape before treating water

Do not treat every misshapen or split tomato as the same disorder; check whether the damage is a flat, scarred, cavity-forming blossom-end malformation tied to cool bloom or transplant weather, or instead a radial or concentric crack near the stem tied to rapid fruit growth, rain, irrigation swings, variety, or ripeness before pruning, watering, fertilizing, canning, or removing fruit.

Protect early flowers from cold stress

Wait until nights and soil are warm enough before setting tomato transplants outside, then use hardening-off and frost-date checks so early flower clusters are not pushed through cold, cloudy weather.

Keep fruit expansion steady

Use mulch, deep watering, and rainfall checks to reduce dry-to-wet swings before fruit near maturity, especially on large tomatoes, older varieties, or exposed fruit.

Choose actions by food safety and severity

Remove badly catfaced fruit that will not ripen uniformly. Use mildly catfaced or cracked fruit only if it is otherwise sound, and do not can fruit with cracks, rot, mold, insect damage, or deep cavities.

Separate variety susceptibility from disease

Neither catfacing nor growth cracking is a sprayable disease; compare cultivar notes, fruit size, first-cluster timing, canopy, and local weather before blaming pathogens.

Use these paths

• Tomato Cracking vs Blossom-End Rot Separate stem-end cracks from dark blossom-end lesions before treating tomato fruit damage as a calcium problem
• Frost Damage vs Transplant Shock Check cold injury, transplant stress, and overnight lows before exposing tomato flower clusters to early-season chill
• Last Frost Date vs Safe Planting Date Use last-frost probability, soil warmth, forecast risk, and crop tolerance before setting tomatoes out early
• Hardening Off Before Transplanting Stage tomato transplants through outdoor light, wind, and temperature changes before early clusters set fruit
• Pollination vs Fruit Set Keep flower disturbance, poor fruit set, heat, water, and fruit-shape disorders separate during tomato bloom
• Garden Watering Planner Plan steady tomato moisture before fruit expand quickly enough to split after rain or irrigation swings

Source basis

• UC IPM catfacing on tomatoes Tomato catfacing symptoms, disfigured fruit, blossom-end scarring or lumping, deep cavities, cool cloudy bloom weather, and variety susceptibility
• UC IPM fruit cracks on tomatoes Tomato radial and concentric cracking, rain after dry periods, sun exposure, uniform water supply, mulch, leaf canopy, and resistant variety guidance
• UMD Extension catfacing on tomatoes Tomato catfacing symptoms, misshapen fruit, deep crevices or holes, blossom-end scarring, cool transplant weather, and fruit removal guidance
• UMD Extension key to common tomato problems Tomato fruit symptom key for catfacing, growth cracks, rainchecking, blossom-end rot, sunscald, stink bug feeding, anthracnose, and canning cautions
• UMN Extension tomato disorders Tomato catface, cracking, blossom-end rot, malformation, blossom-end scars, cavities, moisture fluctuation, variety differences, and watering practices
• UMN Extension tomato fruit cracks diagnosis Tomato growth cracks and catface diagnosis by crack direction, corky blossom-end scars, cavities, young-plant cold exposure, water variation, and rapid fruit development
• UMN Extension tomato quality issues Tomato fruit cracking, quick growth near maturity, variety susceptibility, nutrition, watering, ripeness, removal, and food-use cautions