The Growing Stages of a Cucumber

Hunker may earn compensation through affiliate links in this story.
Cucumbers go through several stages of growth.
Image Credit: Elena_Mikhailova/iStock/GettyImages

It is entertaining to watch a cucumber (Cucumis sativus) grow through its stages from tiny vine to full-size plant with edible fruits. As the soil temperature reaches 70 degrees Fahrenheit, it is time to plant cucumbers, one of the most popular vegetables in the Cucurbitaceae family of plants. Producing fruits used for pickling, slicing or eating fresh off the vine, cucumber is easy to grow in a home garden.


Video of the Day

Seed Sowing and Seedling Emergence

The first stage in the cucumber life cycle is the plant emerging from seed as a seedling. Seeds of vining cucumber varieties such as 'Boston Pickling' and 'Lemon Cucumber' are sown either four to five seeds per hill of soil or 2 to 3 feet apart in a straight row. Seed germination, or sprouting, occurs fairly fast. Watch for the two-leaved seedlings to emerge above the soil three to 10 days after sowing the seeds.

A seedling's first two leaves are called cotyledons and are round with smooth edges. The next leaves are true leaves with the characteristic cucumber heart-shape and sharp-edged margins. The soil should remain moist at all times as the seedlings begin to grow. To test for moistness, put your finger in the soil. It should not be dry beyond the first finger joint. As seedlings reach 4 inches in height, remove some of them so the remaining ones are 1 1/2 feet apart.


Each bush variety of cucumber requires 2 to 3 square feet of space, and the vine type can reach to 6 feet in height. Trellis systems or tomato cages can be used to support plants that are the vine type. Plant cucumber seeds every two to three weeks until three months before your area's first average annual frost date to have a continuous harvest of cucumber fruits as summer progresses. You can find cucumber seeds at a number of establishments, including Home Depot, Amazon and Walmart.

Cucumber Flowering and Pollination

Cucumbers produce two kinds of bright, golden-yellow flowers: male and female. Male flowers emerge first but do not produce fruits and fall off after pollination is complete. Female flowers emerge within one to two weeks.


Cucumber plants are not self-pollinating; they require bees or other pollinators to carry their pollen from male flowers to female flowers. Insecticides applied at the cucumbers' flower stage of growth can kill the pollinators, interfering with the process of pollination.

Fruiting and Harvest

After female cucumber flowers have been pollinated, they swell at their bases and begin to develop into fruits. Cucumber fruits usually can be harvested 50 to 70 days after the seeds were sown, depending on the variety and weather conditions.


Cucumber varieties used for pickling are ready to harvest when the fruits reach 3 to 4 inches in length. The harvest lasts seven to 10 days for each of those plants. The longer fruits of varieties used for slicing are ready for harvest when they are 7 to 8 inches long, and their harvest time may continue for as long as four to six weeks.

At peak harvest time, cucumber fruits should be picked every two days. Cucumber plants produce more fruits when the fruits are picked regularly. Fruits left on the vines become bitter, and their skins turn tough.

A mature cucumber plant produces about 5 pounds of fruits, or about 10 fruits that are each 6 ounces. Heirloom varieties, however, produce about 2 to 3 pounds of fruits per plant.


Cucumber Post-Harvest Care

When harvest is complete, pull the cucumber vines or bushes out of the soil, and put them into the compost bin or pile. Long vines can be cut into 1- to 2-foot lengths for speedier decomposition. Vines or bushes left on the ground to decompose may attract pests or diseases to the garden.



Joan Norton

Joan Norton, M.A., is a licensed psychotherapist and professional writer in the field of women's spirituality. She blogs and has two published books on the subject of Mary Magdalene: "14 Steps To Awaken The Sacred Feminine: Women in the Circle of Mary Magdalene" and "The Mary Magdalene Within."