When to Plant Zucchini – Planting Guide 2024

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You might think that zucchini is a vegetable, but it is actually a young fruit that growers harvest before it fully matures.

People enjoy growing zucchini since it develops very easily and it produces an abundant crop.

When to plant zucchini? Zucchini plants love to grow in the warm season, and they cannot tolerate freezing temperatures. Also known as summer squash, zucchini plants thrive early in the summer when temperatures are at least 70 degrees Fahrenheit.

Planting Zucchini in Different Climates

The key factors to consider when planting zucchinis include temperature, moisture, sunlight, and soil type.

Zucchini seeds will only germinate if the temperature is stable at 70 degrees Fahrenheit.

Additionally, the plants will grow and produce fruits between 70 and 77 degrees.

Zucchini plants will require at least six hours of sunlight every day or at least 12 hours of artificial lighting for indoor planting.

The following lists specific things to consider when planting zucchini in different climates.

Temperate Climate

Temperate regions cycle through all four seasons every year.

Much of the US is in a temperate climate zone, and summer gives everyone a chance to grow zucchini in this zone.

Summer in temperate areas will give zucchinis the full sun to grow and provide abundant harvest.

Continental Climate

Continental regions have climate conditions that tend to go to extremes.

While winter months have rickety freezing temperatures, summer seasons have more stable attributes that are well-suited for planting zucchini.

Bear in mind to start planting as soon as temperatures reach 70 degrees Fahrenheit so that you can harvest as many zucchinis as the plants will allow.

Tropical Climate

The tropics have an annual average temperature between 70 and 86 degrees, the upper limit being quite aggressive for zucchini growth.

In warmer tropical and subtropical regions, it is always advisable to start planting when the temperature reaches an annual low of 70 degrees.

Some say indoor planting would help maintain temperatures within optimum limits, but this might reduce the plants’ sun exposure.

Dry Climate

The keyword here is dry, which means you will have to maintain the soil moisture by regularly watering the plant bed.

Extreme dry climates are also associated with intense heat or intense cold.

For hot, dry regions, partial sun shading and sufficient ventilation will give zucchini a better chance at propagating.

However, cold, dry regions will require indoor growing for zucchini to thrive.

Polar Climate

Since zucchini thrives in warm climates, you might need a proper greenhouse if you plan to grow it in a polar region.

Polar regions receive weak sunlight, and they tend to have colder winters than temperate areas.

A proper greenhouse can amplify the heat to sufficient levels.

Moreover, several grow lights will ensure that the plants receive at least 12 hours of essential lighting.

Choosing Zucchini Seeds

Zucchini is only edible in its immature state.

That is why growers harvest them well before they become mature.

However, zucchini seeds come from the plant’s mature inedible fruits.

That is why you will have to leave the fruits on the plant until they grow big to harvest seeds successfully.

Zucchini seeds need to go through wet seed processing, which means you will need water to ferment, clean, and process it further before drying.

During the washing process, choose the large, heavier seeds that sink to the bottom of the fermented mixture and discard the thin, empty seeds floating at the surface.

How to Plant Zucchini Seeds

Zucchini seeds sprout and grow very quickly, and as such, there is no need to start seeds indoors.

Here are the steps to follow when planting zucchini seeds:

Step 1. The trick is to wait for all chances of frost to pass.

As soon as winter is over and you are sure that the soil is starting to warm up, proceed with the next step.

Step 2. Sow the seeds directly into the garden soil half an inch deep and 3 to 4 inches apart in rows at least 2 feet apart.

If you follow this spacing, planted seeds will grow into plants 6 to 8 inches apart as soon as they reach a height of 5 inches.

How to Water Zucchini

Zucchini plants need a steady amount of moisture to produce abundant, problem-free fruits.

Without enough water, they become prone to blossom end rot, which causes the flowers not to pollinate properly.

When watering zucchini, consider these steps:

Step 1. Regularly check if the raised beds or soil surface becomes dry.

Step 2. Use a soaker hose or drip irrigation to water the raised beds to divert water from streaming on the plant leaves.

Wet zucchini leaves are another recipe for the spread of plant diseases.

How to Grow Zucchini: Tips and Tricks

The process of planting zucchini is far from over after you have sowed the seeds in raised beds.

Your zucchini plants will need all the care you can give until harvest time.

Use these essential tips in growing your zucchini, and find out how fulfilling it can feel come harvest time.

Plant On Good Soil

Summer squash does well in medium-textured soils that are rich in organic matter and have good drainage properties.

For starters, choose an area rich in loam, which equates to 40% silt, 40% sand, and 20% clay.

Use compost or mulch for organic matter to improve zucchini health.

Hand Pollinate

In some areas, there might not be enough pollinators to ensure the substantial development of zucchini plants.

Pollinators include bees and beetles, and a grower might have to take their place as pollinators when they are not around.

You can hand pollinate zucchini vines by gently brushing a q-tip or a small bristle paintbrush on male flowers and then transferring them onto female flowers.

Water Generously

The zucchini plants will need steady moisture to produce large harvests.

It is always essential to keep the soil from drying out.

Every time you notice that the plant bed is about to get dry, add about an inch of water.

If it feels too dry, another extra inch of water should keep the plants thriving.

How long do zucchini take to grow?

Zucchini plants are squash plants that grow fast and plentiful.

Each fruit grows approximately one to two inches per day, and most zucchini squash plants can produce up to ten pounds of fruit per growing season.

It will take approximately 35 to 55 days between planting and harvest.

It is always best to harvest zucchini when they are about 1.5 to 3 inches in diameter and between 4 and 8 inches long.


Wherever you are, keep in mind that zucchinis propagate in warm temperatures of 70 degrees Fahrenheit.

They like to thrive under much sun and enough water, where they will continue to produce more fruits for several warm months.

Learning when to plant zucchini is only partial to protecting the plants.

Common problems of zucchini include squash vine borers, powdery mildew, and blossom end rot, among other pests and diseases.

During the early days of growing zucchini, they may require row covers for protection against insects.

However, with row covers, you will have to hand pollinate the vines.

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