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Zucchini Plant (photo by Rosana Brien / My Garden Plot)

How To Grow Zucchinis

Summer Squash: Zucchinis (Courgettes)

Zucchinis, also known as courgettes in England, are a warm-season vegetable that is very popular to grow and eat. Zucchinis are a summer squash that is very fast-growing, easy to care for and produces in abundance. You don’t need to plant too many to have enough Zucchinis for your family. Two or three zucchini plants is enough for a small family. Here are tips on how easy it is to plant and grow zucchinis, or if you prefer courgettes, in your vegetable garden.

When growing zucchinis, add tomatoes and parsley and you have a complete meal in the making straight from your backyard.

Zucchinis (Courgettes) At A Glance

Type: Annual

Location: Full Sun

Fruit Season: Summer

Where To Grow And How To Care For Zucchini (Courgettes) Plants

Zucchini plants need space to grow at a minimum of 60 cm (24 inches) apart. They can get rather large and spread out with huge leaves. Young zucchinis should be planted after the last spring frost. They prefer fertile, moist, but well-draining soil in a sunny sheltered location. They love the heat, but during hot days, ensure they are watered regularly, or they go into a semi-dormant state. Topdress with rich organic compost or manure, add a little bonemeal when first planting, and fertilize every two to three weeks with a balanced fertilizer.

How To Grow Zucchinis (Courgettes) From Seed

You can grow Zucchini (Courgettes) plants easily from seeds. You can start seeds indoors about three to four weeks before planting outside subject to the final spring frost. Don’t sow outside until soil and night temperature are warmer; generally, it is in the Pacific Northwest during May or June. If planted outside earlier, check the forecast daily and protect the young zucchini plant with a cloche. Plant the seeds about 2.5 cm (1 inch) deep. They can germinate quickly in seven to 10 days. Keep well-watered during this time, ensuring it does not dry out. It is necessary to harden off your young plants before planting in your vegetable bed to help them climatize from growing indoors to the outdoors. Place your young plants outside every day and bring them in at night for about one to two weeks.

Zucchini Seedlings (photo by Rosana Brien / My Garden Plot)
Zucchini Seedlings (photo by Rosana Brien / My Garden Plot)

Inclement Weather: Protect Young Zucchini (Courgettes) Plants With A Cloche

Zucchini (courgettes) are susceptible to frost. Young zucchinis planted out in May may need to be covered up individually with a cloche. Especially overnight to protect from chilly winds or frost. You can purchase a purpose-made cloche, or make your own using a plastic bottle – though it is limited in space. Remove the cloche in the morning once the threat of frost is gone. During spring, I use garden black plastic as a base to keep the warmth overnight. This can be removed once night temperatures are warmer.

Young Zucchini Plant With Garden Plastic to Keep Warmth Overnight (photo by Rosana Brien / My Garden Plot)
Young Zucchini Plant With Garden Plastic to Keep Warmth Overnight (photo by Rosana Brien / My Garden Plot)
Zucchini Seedling With A Cloche Protection (photo by Rosana Brien / My Garden Plot)
Zucchini Seedling With A Cloche Protection (photo by Rosana Brien / My Garden Plot)

Pruning Zucchini (Courgettes) Plants

Keep good airflow and reduce the problems of powdery mildew, by removing any low lying leaves and stems touching the ground, and any from touching each other or another plant. This light pruning also encourages beneficial bugs, and keep any pests in check. Consider whether there are too many leaves hiding the flowers from pollinators and remove a few to help bees find the beautiful yellow flowers.

Pest Problems

Most garden pests enjoy zucchinis; of course they would – aphids, slugs and snails, squash bugs and beetles. Check your zucchinis daily to counter any infestations.

Zucchini (Courgettes) Flowers

Zucchini flowers are also edible. Harvest these at the last moment when you need them. Ensure you check there are no bugs.

Harvesting Zucchinis (Courgettes)

When harvesting, cut the Zucchini at the stem. Don’t pull it. Leaving part of the stems on, and store in the fridge to keep fresh. Harvesting produce may need to be done daily as summer squash can produce quite the harvest! The most flavourful fruit are young ones that are about 15 cm (6 inches). Though you can leave them to grow larger. They are a little less flavourful but good for baking if stuffed, or slow-cooked with tomatoes. And of course, the current trend of having zucchini noodles instead of pasta is delicious – and super healthy!

Zucchini Pasta With Fresh Basil
Zucchini Pasta With Fresh Basil