Cucumber cucumber Cucumber (Cucumis sativus) is a heat-loving annual vegetable grown for crisp fruits. There are three common groups: greenhouse slicing types (often parthenocarpic, long and smooth), outdoor slicing types (shorter, often spined), and pickling/gherkin types (small, firm). They thrive with warmth, abundant organic matter, even moisture, and shelter from wind. Trellising saves space, improves airflow, and yields straighter fruits. Bitter taste is usually due to stress (cold, drought, heat spikes, irregular watering) causing cucurbitacin formation; keep conditions even to avoid this. Growing conditions LightFull sun; warm, sheltered position. Greenhouse or polytunnel extends season in all zones. Soil typeDeep, fertile, well-drained yet moisture-retentive loam enriched with mature compost. Avoid cold, waterlogged soil. Water requirementHigh and steady moisture; never let the root zone dry out. Water at soil level with lukewarm water. Nutrient requirementHigh feeder; needs ample nitrogen early and potassium/magnesium during flowering and fruiting. Back to plant list
