GROWING GUIDE - CUCUMBERS

Looking to grow beautiful, healthy cucumbers in your garden? This guide covers planting, pollination, pest control, harvesting, and companion planting so you can enjoy crisp, productive vines all season long.

QUICK FACTS

• Sun: Full sun
• Soil: Warm, fertile, well-drained soil
• Plant after danger of frost has passed
• Suitable for Canadian growing conditions
• Follow seed packet instructions for best results
• Contact T&T Seeds for personalized growing advice

POLLINATION, PESTS & DISEASES

If your cucumber plants are flowering but not setting fruit, the issue is usually pollination—not disease.

Cucumbers produce separate male and female flowers. Early flowers are often male, so fruiting may not begin right away. Female flowers can be identified by the small cucumber-shaped swelling at the base of the flower.

Poor pollination may also occur during cool, rainy weather or when pollinators are scarce. If needed, you can hand-pollinate by transferring pollen from a male flower to the center of a female flower using a cotton swab.

Common issues:

• Squash bugs: May attack young seedlings—inspect regularly.
• Aphids: Common but manageable with water sprays or organic insecticides.
• Powdery mildew: Avoid wetting leaves; water at soil level. Apply fungicide at first signs.
• Cucumber beetles: Can damage vines and spread disease; use row covers early in the season.

HARVESTING

• Do not allow cucumbers to become oversized—they can turn bitter.
• Harvest every 2–3 days during peak production.
• Slicing cucumbers: harvest at 6–8 in. long.
• Dill cucumbers: harvest at 4–6 in. long.
• Pickling cucumbers: harvest at about 2 in. long.
• Burpless varieties may reach 10 in. or longer depending on type.
• Harvest while fruits are firm, crisp, and uniformly green.
• Overripe cucumbers left on the vine reduce overall plant productivity.
• Use a knife or clippers to cut fruit from the vine—pulling can damage plants.

COMPANION PLANTING

Good companions:

• Asparagus, beans, brassicas, celery, corn, dill, kohlrabi
• Lettuce, onions, peas, radish, tomatoes

Avoid planting near:

• Potatoes
• Sage

Corn and sunflowers can also serve as natural trellises for climbing cucumber varieties.

Cucumbers do not transplant well. For earlier harvests, start seeds indoors in peat pots. Transplant pots directly into the garden to avoid disturbing roots—gently slicing the sides of the pot can help roots expand.

READY TO START GROWING?

Browse our selection of high-quality cucumber seeds and get everything you need to start your garden today!

Shop now at T&T Seeds for the best selection of plants, seeds, and gardening supplies.

RELATED GROWING GUIDES

Explore more of our expert growing guides to expand your garden knowledge:

• Browse our complete collection of Vegetable Growing guides
• Check out our gardening tips for seasonal advice
• Discover companion planting strategies for better yields

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