20 Fastest growing vegetables to get you a harvest the quickest

This post was most recently updated on May 4th, 2020

If you are starting your garden for the season, found yourself at the end of the season with time until your first frost, or have a spare patch of ground, there are some super quick growing vegetables that you can use to fill the space and get a bonus harvest from. The five fasted growing vegetables are listed below, as well as my top picks for a quick garden to get you eating your own homegrown produce the fastest.

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Spring and fall are the times of year that these quick growing crops really come in to their own.

What are the fastest growing vegetables?

There are many vegetables that will grow quickly which we list below, but the very fastest 5 vegetables that you can grow are:

  • Arugula/rocket – 20-40 days
  • Radish – 21 days
  • Salad greens – 21 days
  • Spinach – 25 days
  • Tatsoi – 21 days


 

How do you get the garden to grow fast?

Plants, like other living things have a set group of things that they need to grow optimally. For optimal plant growth you will need:

Warm soil

Many plants germinate at soil temperatures of 10C/50F, some like peas will germinate below that, and others like tomatoes need it to be much warmer.

If you want to give your plants a head start in the cooler months, it is best to sow them indoors or on a heated propagation table. Then harden them off and transplant them outside.

RELATED: Build a heated propagation table

RELATED: How to harden off seedlings

Plenty of nutrients

For quick growth, your vegetables will need plenty of the right nutrients accessible to them in the right ratio. One of the easiest way to do this is to add plenty of natural decomposed organic matter to your soil.

Compost is the best way, and it is super easy to make your own. If you don’t have access to homemade compost, then you could use bought stuff, or even just wing it and use the soil you already have in the garden.

RELATED: How to make compost for beginners

RELATED: The benefits of compost

RELATED: How to improve soil

Moist but not wet soil

To germinate seeds need to be consistently moist, but if they are kept too wet they will rot. Water your seeds once per day with a light spray unless they are outside and it rained that day. If your seedlings dry out they will wither and die quickly.

Keep leafy greens consistently moist to avoid bitterness and bolting to seed too early. Regular liquid feeds encourage healthy robust growth.

Low pest pressure

Slugs and caterpillars/worms tend to be the biggest pests that will destroy your seedlings as they sprout or when you first transplant them.

Strong plants are less likely to be susceptible to pest pressure, so keeping them well fed, well watered and warm will help. 

Keep slugs away by using slug bait, crushed egg shells or coffee grounds and use orange peels to catch them.

RELATED: Free Gardening Resources

Know your climate

Knowing when your first and last frost dates are for your region, plus what growing zone you are in can help you plan when to start your garden, and when to expect it to peter out. You can get your local frost dates by simply asking Google these days!

Seeds should be sown inside 4-6 weeks before your last frost date. The start of the season and the end of the season is cooler meaning that plants will grow slower. You can cover them with a low tunnel like this one to help keep them warm and growing.

RELATED: What is your USDA zone

20 Fast growing crops for a quick harvest

The estimated harvest day listed below just marks a point where growth may be at its peak. Many of these varieties are ‘cut and come again’, which means that you can trim off leaves to use and leave an inch at the base, so that new leaves will grow—sometimes several times over.

1. Arugula | Rocket | 20-40 days

This mildly peppery herb and leafy salad green is a rapid grower. It’s ideal to pick leaves when young and small as the flavour is not as spicy

2. Beets | 40-70 days 

You can eat both the leaves as salad greens and the root as beetroot.

Canning beetroot

3. Broccoli Raab/Rapini/Rabi | 40-60 days

Although it has broccoli’s name, broccoli raab is not a true broccoli. It is, however, more closely related to turnips which is probably why the leaves look like turnip.

Growing broccoli

4. Endive | 35-50 days

With a snappy, crisp bite and a refreshingly mild bitterness, raw endive usually finds its way into salads, but the separated leaves can also be cooked

5. Kale | 30-65 days 

Often known as curly kale, it is full of nutrients. It is from the brassica family and is an attractive vegetable, with a deep green colour and curly leaves. Baby leave are used in salads, the larger ones are good steamed.

Growing kale

6. Kohlrabi | 40-50 days

When raw, kohlrabi is slightly crunchy and mildly spicy, like radishes mixed with turnip. You can toss them in a salad, make a slaw out of grated kohlrabi, or cook and mash them like potatoes.

7. Leaf lettuce | 40-60 days

There are three types of leaf lettuce: red, green, and oak. Don’t look for a “head” on them because the leaves branch from a single stalk. A great pick and come again crop.

Growing lettuce

8. Mache/ Corn salad | 45-50 days

It has a characteristic nutty flavour, dark green colour, and soft texture, and is popularly served as salad greens.

Winter salad greens

9. Mesclun Greens | 30-45 days 

Mesclun is a mix of assorted small young salad greens that originated in Provence, France. The traditional mix includes chervil, arugula, leafy lettuces and endive.

10. Mibuna | 21-40 days

Mibuna is a long leaved variety of Japanese Green, reaching up to 30 cm high at maturity. It can be distinguished from the serrated Mizuna Mustard Greens by its smooth, rounded and spear shaped leaves, which have a resemblance to spinach leaves.

11. Mizuna | 35-45 days

This is a leafy green vegetable that’s native to East Asia. It’s also referred to as Japanese mustard greens, spider mustard, or konya. Part of the Brassica genus, mizuna is related to other cruciferous vegetables, including broccoli, cauliflower, kale, and Brussels sprouts. Usually used in salads, it can also be steamed or added to stirfries.

12. Mustard | 21-45 days

Related to kale, cabbage, and collard greens, they are the peppery leafy greens of the mustard plant and are used frequently in asian cooking. 

13. Onion greens | 40-50 days

Spring onions or onion greens are grown from seed but eaten before the onion bulbs form. Slice thinly and use in salads, dips, asian dishes and more.

14. Pak Choi | 40-55 days

A leafy green Chinese cabbage that’s ideal for stir-fries or can be steamed till soft in a vegetable side dish. This veggie grows remarkably quickly and is very tasty.

15. Peas | 50-60 days 

Sow seeds after pre-soaking to speed up germination in cooler months. Because snow peas don’t need to fill out like podded peas, some of these varieties mature the fastest. Try Bush ‘Oregon’ snow peas (60 days) or Bush ‘Sugarsnap’ (56-58 days)

Growing peas

16. Radishes | 21-30 days

Radishes are sown from seed and harvested in just 3-4 weeks. These delicious crunchy, crisp and colourful vegetables are absolutely the fastest vegetable to grow!

17. Spinach | 30-55 days

Super versatile, this fast growing green can be used in salads as a cut and come again baby leaf, or left to grow larger to be used cooked in other dishes. 

Growing Spinach

18. Swiss Chard | 30-60 days

Swiss chard, or silverbeet as we know it, is a large leafed easy to grow vegetable that can be used in a similar way to spinach. It has a slightly stronger flavour but pairs well with butter and garlic.

19. Tatsoi | 21-45 days

Another asian green, tatsoi is a small low-growing plant that forms a rosette of petite spoon-shaped leaves. It has short pale lime green stems that are succulent and tender, likened to those of a celery heart.

20. Turnips | 35-50 days

Turnips when eaten young are sweet and delicious to eat raw. Left to grow a bit larger you can cook both the tops and the roots.

Fastest growing vegetables in pots and containers

If you have a container garden, many of the salad greens can be grown quickly in pots. The upside to a container garden is that they are easier to keep warm, especially if you are growing in terracotta or ceramic pots. These warm up in the sun and keep out the frost a little better than just planting in the ground does.

The best fast growing vegetables to grow in pots are:

  • Salad greens
  • Radish
  • Onion greens
  • Arugula
  • Tatsoi

If you are wanting to get your garden up and growing quickly or you think you have time to grow a little more before the frosts arrive, these are the fastest vegetables that you can grow in your garden for a quick and easy harvest.

If you need help getting a garden started at your place, let me teach you how to garden today.

 

For further reading, I also recommend all of these books. I own every one of them and they are amazing resources!

 

 

 

 

 

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