Plant guide:ð Pumpkin
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Growth
Misshapen or Lopsided Pumpkin Fruit
Commonly affects: Cucurbita pepo, C. maxima, C. moschata (Pumpkin)
The developing fruit grows unevenly, ending up lopsided, flattened on one side, or oddly shaped rather than the expected round or oval form for the variety.
Potential Causes
- 1Incomplete pollination, where only part of the ovary's seed cavities were fertilised, causing uneven growth
- 2Fruit resting against an obstruction (rock, fence post, another vine) as it expands
- 3Uneven ground contact causing one side of the fruit to flatten during development
Solution Steps
- 1Hand-pollinate thoroughly, transferring pollen across the entire stigma of the female flower rather than just touching it briefly.
- 2Clear any obstructions near developing fruit before it grows large enough to be affected.
- 3Rotate the fruit gently every few days early in development if flattening on one side is a concern.
- 4Note that misshapen fruit is still fully usable â the issue is purely cosmetic.
Prevention Tip
Thorough hand-pollination â covering the whole female flower's stigma with pollen, not just a quick touch â produces more evenly shaped fruit than partial pollination from a single bee visit.
