Will cucumbers cross-pollinate with other vine crops?
Cucumbers will not cross-pollinate with squashes, pumpkins, muskmelons, or watermelons. Cucumber varieties may cross with one another. However, the quality of this year’s crop is not affected. (An exception is the cross-pollination of parthenocarpic cucumber varieties with standard varieties. Parthenocarpic varieties develop fruit without pollination. As a result, the non-fertilized fruit do not contain seeds. Parthenocarpic varieties must be isolated from standard varieties to prevent cross-pollination and seed development.)