Climbing zucchini - sowing and growing (2024)

Zucchinis are real summer vegetables. The seeds only germinate above 20°C, any lower and they won't sprout.

So, sow them indoors around the end of April/beginning of May. That's called pre-sowing. When the plant is big enough, you can move it into your garden box at the end of May.

Or - since the plants grow so fast - you can also pre-sow them at the end of May. Then you can move it outside sooner.

There's one step before you pre-sow: let them grow a root first. That's called pre-germination or pre-sprouting.

If you pre-sprout your seeds you can be sure your seedlings will grow well. And you want to be sure: these zucchini seeds aren't cheap. Why risk it? 😉

Here's how to pre-sprout: get a piece of paper towel moist, fold it in half, put the seeds in between the 2 layers, and you're done.

Check every now and then for a root. Sometimes it takes 2-3 days, often a little longer. Some seeds even take more than 10 days.

Climbing zucchini - sowing and growing (2024)

FAQs

How to grow climbing zucchini? ›

Just make sure it grows upward and not sideways. If necessary, put a stick next to it to guide it in the direction of the trellis. A climbing zucchini won't grab onto the trellis on its own, so tie it up with string, plant clamps, or binders. Water your zucchini plant every day if the weather is dry.

How to direct sow zucchini seeds? ›

How to Sow Zucchini. You can sow zucchini directly outside after your last frost date. Make a depression into the soil about half an inch (1cm) deep then drop in two seeds. Cover them back over and pop a clear jar or half a plastic bottle over the top to serve as a miniature greenhouse to speed things along.

What is the planting method of zucchini? ›

Sow the zucchini seeds 1 inch deep and cover with soil. Keep the seeds moist until they sprout in 7 to 14 days. You can plant 2 to 3 seeds per space and then thin to 1 plant per 2 feet. At first, this may seem like a lot of space between seeds, but zucchini plants grow big fast.

How far should zucchini plants be planted apart? ›

When the soil has warmed up in your planting beds, plant seeds one-half inch deep, 3 to 4 inches apart, in rows that are 2 to 3 feet apart. Thin plants so that they are spaced 6 to 8 inches apart once they are 4 to 5 inches tall.

How long does it take zucchini to fully grow? ›

Zucchini Squash

Since zucchini seeds will come to maturity quickly — about 45 to 55 days — you can even wait until August to plant for an early fall harvest. In fact, many experts recommend waiting until mid-July to plant so you can avoid infestation of a specific type of squash bug.

How many zucchini grow from one seed? ›

Zucchini is a plant that you only need one of to get plenty of produce. On average, one zucchini plant can produce between three and ten pounds of produce depending on how well it's cared for. Zucchini plants can take a while to produce. You can expect to see zucchinis within 35 to 55 days of it being planted.

Should you soak zucchini seeds before planting? ›

Zucchini seeds do not require any treatment (eg soaking, stratification) before sowing. Zucchini seeds grow best when they are sown directly into the garden. Sow seeds directly in the garden 20mm deep and 50-80cm apart, with rows 80-120cm apart.

How many days does it take for zucchini seeds to germinate? ›

Sow seeds 2.5 cm (1″) deep and sow 5-6 seeds per hill or 5 cm (2″) apart. Plants should be spaced/thinned to 2 or 3 of the strongest plants per hill or 15 cm (6″) apart. Rows should be spaced 1.5-1.8 m (5-6′) apart. Seeds germinate in approximately 5-12 days.

Should I direct sow zucchini? ›

Direct sowing seeds outdoors can give big results, fast, without all the fuss of caring for transplants. And many summer crops generally grow better when direct sown, forming deeper, more drought-tolerant root systems. In late spring we direct sow corn, snap beans, zucchini, summer squash, winter squash, and pumpkins.

Should you start zucchini indoors or direct sow? ›

Direct sow or transplant in late May or early June when soil is warm. For transplants, start seeds indoors in late April or early May. Optimal soil temperature for germination: 25-35°C (68-95°F). Seeds should sprout in 7-14 days.

Do zucchini like wet or dry soil? ›

Watering Zucchinis

Summer squash prefers consistently moist soil but not soggy. One inch of water per week should suffice, but water more often if the weather is particularly hot and dry. Well-draining soil is a must—if it water pools and remains stagnant around the roots, they will start to rot.

What not to grow next to zucchini? ›

Potatoes can also spread diseases such as late blight, which can also affect zucchinis. Cucumbers and pumpkins should not be planted next to zucchinis as they belong to the same family (Cucurbitaceae) and therefore attract similar pests and diseases.

Can I plant zucchini next to tomatoes? ›

Zucchini and tomatoes can be grown as close neighbors and will make satisfactory companion plants. Both vegetables thrive in the same environmental conditions, so a garden plot that is ideal for one plant is therefore ideal for the other. They both need a location with full sun and benefit from nutrient-rich soil.

Can you plant zucchini too close together? ›

Plant zucchini in rows with at least 3 feet of distance between rows and space of 1.5 to 3 feet between plants. If you have a larger garden and want to grow a lot of zucchini, plant them in rows. You can grow any variety of zucchini in rows, including both compact and sprawling plants.

Do zucchini need a trellis to climb? ›

People often grow these vine vegetables on trellises or supports of all kinds. This is a cucumber plant growing on a wood support. Most cucurbit plants are veining and are often grown on trellises or other supports, but most often, zucchini is a bush plant, not requiring any vertical support.

Does zucchini grow well on a trellis? ›

If we don't want to drive a wooden stake in our garden bed, and potentially damage the root system of our plant, can we still grow zucchini vertically? Yes we can. We can build a SIMPLE trellis frame.

Can you make zucchini grow vertically? ›

You can efficiently train your squash plant vertically using a six-foot garden stake. It's best to plan ahead and put it in the earth before the plant puts down roots. Drive it a foot and a half into the garden bed for best results. Another great tip and alternative is actually to use a tomato cage!

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