Zucchini are one of the easier plants that you can grow in a garden. They have some special requirements for sure, but once those are met zucchini will grow prolifically and produce a huge crop from even a few plants. On top of them being great producers in the garden, they’re fantastic in the kitchen too. Zucchini are a great part of shish kebabs, lasagnas, and pastas. They van even be the pasta if you want to make zucchini noodles!
About Zucchini
zucchini are a variety of summer squash. They grow in warm weather and direct sunlight as a vining herbaceous plant that produces fruit that is green or yellow depending on the specific type grown. The fruit is often harvested when it is around 10 inches long, but if left in the correct conditions the fruit can grow up to 3 feet long. In general if you are growing zucchini to eat, the smaller fruit will taste better and have a softer rind, making it the ideal choice for cooking.
Zucchini also grow lovely yellow flowers. In some cases these flowers are also used in the kitchen as they are also edible. The barely open flowers can be harvested with the inner parts removed and used as a lovely garnish for a dish when cooked. While this is something that people do, it is not all that common and certainly not a staple of home cooking.
The Basic Planting Conditions for Zucchini
Zucchini are a summer plant. They are typically planted when the summer soil has reached a temperature of 65-70F. The crop is particular about their soil, but their soil maintenance is rather easy. As a note before we get into specifics, because the plant takes up so much nutrients from the soil, you should avoid planting them in the same place multiple years in a row.
Soil Conditions for Planting Zucchini
Zucchini prefer slightly acidic soil, but can actually tolerate soil with a pH range of 6.0-7.5. Compared to most plants you will grow in a home garden, the ability to withstand a soil pH above 7 is a bit on the rare side. Despite being able to survive a basic soil, a pH of 6.0-7.0 will produce best results from the plant. If you are unsure on your soil pH you should test it before you plant.
Zucchini also like a well fertilized soil. Before planting you can work in a general purpose fertilizer or a 10-10-10 NPK fertilizer to prepare the soil conditions. Even without fertilizer you’re going to want a soil rich in organic components that drains well. While zucchini can survive in a lot of different soils, a better fertilized and well optimized soil will help you produce a much higher yield from your plants.
Growing Temperatures and Climates for Planting Zucchini
Zucchini are a summer crop. They prefer direct sunlight and warm weather. You can plant your zucchini outside once the weather is consistently 65-70F or when nighttime temperatures stay above 55F. If you are in a colder region where you have a short summer, you may want to consider starting your plants indoors instead. While this is not required in most locations, it can give you a slightly better window to harvest more zucchini over the growing season as they stop producing once the weather gets too cold.
How to Plant Zucchini
Zucchini can be planted directly in the ground. While for most plants we recommend starting them indoors, this is not typically necessary for zucchini which grows fast and well. When you are planting outside you can plant the seeds 3 inches apart and then thin them down to 8 inches apart selecting the best ones once they are several inches tall.
Zucchini seeds should be planted a half inch deep in soil and watered well.
There are actually two main varieties of zucchini that you can grown. The more common zucchini is the vining zucchini, but they also come in a bush variety. If you are planting your zucchini in a raised bed, the bush variety will make a better use of your space. If you are planting your zucchini in a normal ground plot then you’ll likely want to go with the vining variety that typically grows a bit faster but takes up a lot more space.
Vining varieties of zucchini can be planted in pots, planters, and raised beds too, but you’ll need to provide them with a trellis or stakes to grow on. The vining zucchini plant spreads out to get as much sun as possible, so to accommodate that you will need to give the plants somewhere to grow up to when there isn’t much horizontal space for them to spread across.
Starting Zucchini Indoors
If you are starting zucchini indoors you’ll want to plant them in individual containers or larger celled trays. The seeds germinate quickly and you don’t want to plant them too soon if the outside conditions are not right because they will easily outgrow their starting cells in a matter of days.
Plant seeds indoors in a seed starting mix, not potting soil, or in a peat rich organic starter. The seeds should be planted a half inch deep and if possible should be started on a heated mat to keep the soil temperature between 70-80F. The indoor temperature for the plants should be high, between 70-80F and the soil should be kept moist with a misting bottle, though it should never be overly wet. Once they germinate you will want to give them full sun or grow lights for 8 hours a day for best results.
If you are starting them indoors do not star them any earlier than 4 weeks before you can plant them outside as you may miss your window to transfer them before they outgrow their containers. Transfers should be planted outside spaced a minimum of 8 inches apart with rows in ground beds separated by 12 to 16 inches.
Caring for and Growing Zucchini
Zucchini are quite easy to care for and grow with proper sunlight and water!
How to Water Zucchini
Zucchini are thirsty plants. Because they grow quickly and have a high water content they should always have moist top soil. Water them whenever the top soil becomes dry to the touch with about inch of water. This typically requires that you water your crops 2-3 times per week during the height of summer, but in general you should avoid dry top soil and water as needed. Under watering your zucchini can lead to a defect known as blossom end rot where the fruit rots before it is fully mature.
That being said, you can still over water your zucchini. You want to keep the soil moist, not wet, and you should never have standing water on your garden bed.
If you cannot keep up with the watering needed for zucchini you can provide them with a top layer of mulch around their base once they 4-8 inches tall. This will help keep the soil moist even while the plants are in full sunlight.
How Long Does it Take Zucchini to Grow?
Zucchini can go from seed to harvest in as little as 45 days. Typical ranges for common varieties will be between 45-55 days to harvest in ideal conditions, but that can vary with type, growing conditions, and season.
How to Harvest Zucchini
Zucchini should be harvested once they are between 3 and 10 inches long. The smaller zucchini are great for cooking as they are nice and tender and have a lot of good flavor, but typically people will harvest in the 8-10 inch range for best yield and maximum edible volume. To harvest the zucchini simply pick or shear off the stem just above where it connects to the fruit.
How to Store Zucchini
zucchini should be stored whole, unwashed, in the fridge. If you have a crisper draw you should keep them there, but otherwise they should be in a humid cool environment. Once stored zucchini will keep for 1 to 2 weeks under normal conditions. Because zucchini are so prolific you should pick them and use them right away as they come in to avoid overloading your fridge. If you have too many zucchini you should consider making zucchini bread so they don’t go to waste.
Zucchini Are Easy
Zucchini are a greedy plant that wants lots of water, sunlight, and soil nutrients, but once you give them what they need they grow rapidly and are extremely prolific. While they can take over a lot of space, the simple vining zucchini plant will provide you with an incredible amount of harvestables that are versatile and easy to cook. Go on and give zucchini a try! For as easy as it is to grow, there’s almost no reason not to!