Vegetables

How to Plant, Grow, and Care for Spaghetti Squash

Spaghetti squash is a winter squash worth growing as a pasta substitute. Growing this vine is easy if you follow our in-depth guide! Kelli Klein will provide tips on how to grow and harvest spaghetti squash.

All squashes are similar in....

growing habits, and most of the care regimen is nearly identical. However, growing spaghetti squash is a smidgen different in a few ways; the rind is hard but not as hard as some other winter squash varieties, and the color is very distinct on most spaghetti squash varieties when it’s time to harvest.

These squash vines produce relatively heavy fruit. Growers may want to tie spaghetti squash with a trellis to support their vines and the growing fruit. Even the vines that splay out for eight feet can use a little bit of mulch underneath to help protect the fruit from decay!

Of course, the most distinct difference in spaghetti squashes is their noodly-textured flesh. This unique flesh is used culinarily as a pasta replacement.
What is a Spaghetti Squash?
Spaghetti squash is a member of the winter squash family. It is also known as vegetable spaghetti and comes in many varieties. It is relatively easy to grow, thriving in gardens or pots.

Native Area
Like most squash, its wild ancestors originated from Central America and Mexico. This particular subspecies, Cucurbita pep ssp. ovifera was first recorded in China in 1850, although how it arrived there and its exact origins are unknown.

Characteristics
The plants are monoecious with male and female flowers on the same plant. Male flowers have long, thin stems that extend upwards from the vine while female flowers are shorter, with a small round growth underneath the petals.

Varieties

‘Tivoli’ is a dwarf variety that is a great option for gardeners with limited space. ‘Small Wonder’ produces compact fruits, making the perfect single serving a good choice for smaller families or those who may not eat an entire squash in one sitting. There are also striped hybrid varieties such as ‘Stripetti’ and ‘Sugaretti’.

Planting
You may choose to either direct sow spaghetti squash seeds or transplant out squash seedlings depending on the length of your growing season. To determine the length of your growing season you’ll need to calculate the number of days between your last frost and first frost date. Begin planting a few weeks after the last frost.

Spaghetti squash is extremely frost-sensitive and can only be grown between these two dates in your zone. Since it needs such a long growing season, taking between 90 and 100 days to fully mature, it can be beneficial to transplant squash seedlings in areas with a shorter season. If your season is long enough, you may direct sow seeds. Alternatively, you can do both! Transplanting seedlings and direct sowing late-season crops at the same time can give a staggered harvest.

When direct sowing, it’s best to sow seeds in groups of two or three, a few feet apart. Cover seeds with about an inch of soil and keep the soil moist until the spaghetti squash seeds germinate. Once each squash sprout is established and at least a few inches tall, thin the weakest seedling from each group.

Spaghetti squash can be grown directly in the ground and allowed to sprawl or trained up a trellis. It can also be successfully grown in containers and raised beds and allowed to trail over the sides. ‘Tivoli’, which has short vines and grows about two feet tall and three feet wide, is the perfect choice for a five-gallon container. Be sure you are planting squash in an area of the garden that receives full sun in well-drained soil, and you’ll be rewarded with more than you know what to do with!

How to Grow
Spaghetti squash is a great addition to your winter squash collection. These squashes are very easy to care for. Below, we’ll discuss how to grow spaghetti squash by providing it with ideal growing conditions.
Maintenance
It is not necessary to prune your spaghetti squash vines at all. However, pruning helps keep it compact and focus all of its energy on fewer fruits, rather than more average-sized fruit. Pruning is optional during the growing season, but better at the end of the season. When you’re within 30 days of your average first frost date, prune back additional squash blossoms (they’re edible and delicious fried so don’t throw them away!) This way the vine can focus on ripening the remaining fruits.

Dwarf varieties are more bush-like and don’t require pruning. A trellis is a great way to utilize the vertical space, making harvesting spaghetti squash easier. This makes them more visible and less likely to be hidden on the ground under large fan-like leaves. A squash trellis can be made from any sturdy material that can either be driven into the ground or tied off to stakes or t-posts. My favorite option for this is to use a cattle panel attached to a t-post on either end.

As the vines grow, weave them through the lower level of your trellis, and then they will take hold on their own. When growing vertically, keep in mind that the fruits won’t be supported by the ground as they grow. Once the fruits develop, you can cradle them with a t-shirt, old pantyhose, or any similar flexible, but strong fabric. At the end of the season, cut it back at the base and pull the vines from your trellis. If you live in an area with squash vine borers and squash beetles, then you may want to pull up the roots and discard every part to avoid providing them with the perfect environment to overwinter.