Diamondback Cucumber Seed

Why Grow Diamondback Cucumber?

High-Yielding, Disease-Resistant Diamondback Cucumbers are a top-performing slicing variety bred for productivity and reliability. With an incredible disease resistance package and vigorous plant growth, this cucumber is built to thrive in challenging growing conditions. The gynoecious plants produce all female flowers, meaning more fruit per plant and consistently heavy yields throughout the season.

Crisp, Uniform Slicers with Excellent Holding Ability Diamondback Cucumbers produce beautiful fruits that average 8.5 inches long and 2 inches wide—ideal for fresh slicing, sandwiches, and salads. The cucumbers hold well after harvest, maintaining their quality and texture longer than many standard varieties. With strong plant vigor, dependable production, and outstanding disease resistance, Diamondback is an excellent choice for gardeners who want abundant harvests and consistent performance in the garden.

Diamondback Cucumber Growing Tips

• When to Plant Cucumbers

Cucumbers are a warm season vegetable that should be planted after the risk of frost has passed in early spring. In many regions cucumbers can be grown throughout the entire warm growing season. In climates with intense summer heat, disease-resistant varieties are preferable for growing in the middle of summer.

Cucumber seeds should be directly sewn in the garden. Plant seeds approximately 1/2" deep and water well to encourage fast germination. Cucumbers can be planted 4-6" apart when grown vertically on a trellis, although some gardeners prefer to give each plant more space for ease of harvesting.

A trellis is not an absolute necessity when growing cucumbers, but it will make harvesting easier and allow you to grow more plants in a given space. Growing them vertically will keep the plants off the ground and provide for cleaner, higher-quality fruits.

To see how to make an easy cucumber trellis, watch this video.

• How to Fertilize Cucumbers

It's always a good idea to apply some pre-plant fertilizer to the soil when planting cucumbers. We like to add  Coop Gro organic fertilizer in the planting furrow or over an entire raised bed before planting. This ensures the plants have the right nutrients to put down roots in their new soil.

Fruiting vegetables like cucumbers will benefit from something called "spoon feeding." This process involves frequent fertilizations at lower concentrations, as compared to fertilizing them heavily once.

Once your cucumber plants start to develop their second and third set of leaves, feed them every 2-3 weeks with a relatively balanced fertilizer. We like to sprinkle Coop Gro around the plants or make a liquid solution of AgroThrive Fruit & Flower and pour that alongside the plants. Healthy, dark green cucumber plants will be more tolerant of pest and disease pressure as they grow.

• When to Harvest Cucumbers

Cucumbers will require harvesting at least every three days. During periods of heavy precipitation or with adequate irrigation, they may need to be harvested every 1-2 days. Once the fruits start to form, they will enlarge quickly.

Cucumbers are best picked before they get too large, as they will be the most tender at this stage. If you let the fruits get too large, they can be come spongy not as desirable. Harvest frequently to ensure you get the fruits when they have the best texture and flavor.