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Cucumber Growing Guide

5 Steps to Cucumber Planting Success

  • Create a support structure or frame for cucumbers to grow up.
  • Choose a warm, sunny spot. Spring and summer are the best times to plant cucumbers in New Zealand. 
  • Prepare your soil with organic matter like compost and sheep pellets, then add a layer of vegetable mix to plant into.
  • Water and feed your cucumbers regularly as they grow in spring and summer. Also ensure good ventilation around plants.
  • Harvest cucumbers regularly to encourage flowering and fruiting.

Follow our full guide below to a bumper crop of homegrown cucumbers.

Cucumbers are a quintessential summer crop, popular sliced into sandwiches and salads, pickled, or added to drinks and punches.

Prepare

Cucumbers grow on a vigorous vine that is best trained up a supporting structure or frame. Cucumber can rot quickly when they touch the soil, hence the need to get them off the ground to ensure they ripen evenly and healthily.

Cucumbers must have heat and sun to flourish. They are frost-tender, so in cold areas wait until the chilly nights are over before planting. They also don't tolerate wet or boggy soils.

Check out our Tui Cucumber Seed - Telegraph Improved for long slim fruit with thin skin so there's no need to peel. 

If growing from seed, cucumber seeds are best raised under glass or in pots indoors before planting out once they have a few leaves and frosts have finished. 

Cucumber favourites include the following varieties: Apple cucumber, Diva, Gherkin, Greenslicer, Lebanese and Telegraph. 

Plant

Like building a house a good foundation is the key to success in your garden. The better the soil, the better your plants will grow. Cucumbers enjoy a rich, fertile soil. If you are starting with an existing garden bed dig in organic matter like Tui Sheep Pellets and Tui Compost to your soil. Then you can add a layer of Tui Vegetable Mix. If planting in pots and containers, fill with Tui Vegetable Mix.

The best times to plant are early in the morning or late in the day, so the plants aren’t exposed to the hot sun straight away. 

Cucumbers can be prone to damping-off caused by poor drainage and lack of air movement. Therefore free draining soils and good ventilation are key to a healthy crop.

Planting in garden beds

  • Soak seedlings in a bucket of Tui Organic Seaweed Plant Tonic and allow to drain. This will help prevent transplant shock and give your plant a healthy boost.
  • Add a layer of Tui Vegetable Mix to the planting area.
  • Dig a hole, approximately twice the depth and width of the root ball of your plant.
  • Gently loosen the root ball of your plant and position the plant in the centre of the hole.
  • Fill in with Tui Vegetable Mix.
  • Press soil gently around the base of the plant.
  • Water your plant well and continue to water regularly.

Planting in pots and containers

 Choose a pot at least 30cm in size. 

  • Soak seedlings in a bucket of Tui Organic Seaweed Plant Tonic and allow to drain. This will help prevent transplant shock and give your plant a healthy boost.
  • Partly fill your container with Tui Vegetable Mix.
  • Gently loosen the root ball of your plant and position the plant in the container.
  • Fill your container with Tui Vegetable Mix up to 3cm from the top.
  • Tap the container gently on the ground to settle the mix.
  • Press soil gently around the base of the plant.
  • Water your plant well.

As the vines grow, attach them to strings, stakes or frames. When the vine reaches the top of the string, pinch out the growing tip as this will encourage the plant to produce more stems and fruit.

Nourish

Feed your plants and they will feed you. Plants use nutrients from the soil as they grow, so replenishing the nutrients ensures your plants grow to their full potential.

Select a fertiliser specially blended for your crop like Tui Vegetable Food. Feed cucumbers planted in pots and containers with Tui NovaTec Premium fertiliser. Well-watered, well-nourished cucumbers will have a better chance of keeping insect pests and diseases at bay.

While your cucumbers are growing regularly apply a dose of Tui Organic Seaweed Plant Tonic to give them a welcome boost.

Pollination

Cucumbers bear male and female flowers, however only the female flowers set fruit. The female flowers need to be pollinated by the male flowers. If the bees aren't doing their job so well, you can do this by hand by rubbing the pollen from the male flower onto the female flower. Try attracting bees into your garden with bee friendly flowers to increase pollination. 

Harvest cucumbers regularly to encourage more flowering and fruiting. Ensure you cut them from the vine rather than pulling them off to avoid disease entering the vine. Cucumbers can be stored in the fridge for up to a month. 

Recipe inspiration

Once you've harvested your cucumbers, try Susan's Pineapple & Cucumber Relish recipe to enjoy your bumper crop. 

When should I plant
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