15 Fast Growing Veggies You Can Harvest Just Weeks After Planting

3 mins read
March 3, 2020

If you’re eager to enjoy fresh homegrown produce but don’t want to wait months for a harvest, you’re in luck.

There are plenty of fast-growing vegetables that go from seed to table in just a few short weeks. These quick-growing crops are ideal for beginners, kids’ gardening projects, container gardens, or anyone with a short growing season.

Whether you’re planting in raised beds, containers, or a backyard garden, these vegetables are not only speedy and productive, but many also offer multiple harvests throughout the season.

Here’s a list of 15 fast-growing vegetables you can harvest in a matter of weeks—some as quickly as 20 days!


1. Radishes – Ready in 20 to 30 Days

Radishes are one of the fastest vegetables you can grow. Most varieties mature in just 3 to 4 weeks, making them ideal for impatient gardeners. They thrive in cool weather and can be grown in spring and fall.

Best Varieties: Cherry Belle, French Breakfast, Sparkler
Bonus Tip: Sow seeds every two weeks for a continuous harvest.


2. Arugula – Harvest in 20 to 25 Days

This peppery, leafy green is a great addition to salads and can be harvested as baby greens in under 3 weeks. Arugula prefers cooler temperatures and can also be grown in partial shade.

Pro Tip: Harvest outer leaves to allow the plant to keep producing.


3. Lettuce (Leaf Varieties) – Ready in 30 Days

Loose-leaf lettuces such as Buttercrunch, Oakleaf, and Red Salad Bowl are fast growers that can be harvested as early as 30 days after planting.

Growing Tip: Use the “cut-and-come-again” method to extend harvests for weeks.


4. Spinach – Ready in 30 to 40 Days

Spinach grows quickly in cool, moist conditions and offers an abundance of tender, nutrient-rich leaves. Baby spinach leaves can be harvested in as little as 3 to 4 weeks.

Best Varieties: Bloomsdale, Baby’s Leaf Hybrid
Note: Bolts quickly in warm weather—ideal for early spring or fall planting.


5. Green Onions (Scallions) – Harvest in 21 to 30 Days

Green onions don’t require full bulb formation to be enjoyed. You can harvest the green tops in just 3 to 4 weeks, or let them grow longer for a slightly stronger flavor.

Bonus Tip: Regrow the white base in water or soil after harvesting.


6. Baby Kale – Harvest in 25 to 30 Days

While mature kale takes up to 60 days, baby kale leaves are tender, flavorful, and ready in under a month. It’s packed with nutrients and great for salads and smoothies.

Best Varieties: Dwarf Blue Curled, Red Russian
Pro Tip: Harvest the outer leaves to encourage continuous growth.


7. Mustard Greens – Ready in 30 Days

Mustard greens are quick to sprout and grow fast in both spring and fall. Their mildly spicy leaves add a zesty punch to any meal.

Varieties to Try: Green Wave, Southern Giant Curled
Bonus: Young leaves are more tender and less pungent.


8. Bok Choy (Baby Size) – Ready in 30 to 35 Days

Also known as pak choi, baby bok choy grows quickly and is perfect for stir-fries or soups. You can harvest the whole plant or pick outer leaves.

Best Varieties: Toy Choy, Mei Qing Choi
Growing Tip: Prefers cool weather and partial sun.


9. Turnip Greens – Harvest in 30 to 35 Days

While turnip roots take longer to mature, the greens are ready in under a month and are packed with vitamins. They’re delicious sautéed or added to soups.

Note: Pick young leaves for best texture and flavor.


10. Beets (Baby Beets & Greens) – 35 to 45 Days

You can start harvesting beet greens within 3 weeks and baby beets shortly after. This dual-purpose crop offers both tasty roots and leafy greens.

Best Varieties: Detroit Dark Red, Chioggia
Pro Tip: Thin out the seedlings and eat the ones you remove.


11. Pea Shoots – Harvest in 14 to 21 Days

Pea shoots are one of the fastest-growing leafy crops. They sprout quickly and offer tender, sweet greens that are perfect in salads or sandwiches.

Growing Tip: Sow thickly in shallow containers indoors or out.


12. Cress – Ready in 14 to 21 Days

Garden cress or watercress can be harvested in as little as 2 to 3 weeks. It thrives in cooler temps and offers a sharp, peppery flavor similar to arugula.

Bonus: Can be grown indoors on a sunny windowsill year-round.


13. Swiss Chard (Baby Leaves) – 30 to 40 Days

Swiss chard is a colorful, fast-growing green with a mild flavor. Baby leaves can be picked early, and the plant will continue to produce new growth throughout the season.

Varieties to Try: Bright Lights, Fordhook Giant


14. Zucchini Blossoms – Harvest in 35 to 45 Days

While it takes longer to get full zucchinis, you can harvest edible zucchini flowers much earlier. These blooms are delicious when stuffed or lightly fried.

Tip: Harvest male flowers (they don’t produce fruit) to encourage pollination of the females.


15. Bush Beans – Ready in 45 to 50 Days

Though not as fast as greens, bush beans still deliver an early harvest compared to many crops. Some varieties can be ready in just 6 to 7 weeks from planting.

Fast-Growing Varieties: Contender, Provider, Blue Lake 274
Pro Tip: Pick beans regularly to encourage continuous production.


Quick Tips for Growing Fast Veggies

  • Maximize Sunlight: Most fast-growing veggies need at least 4–6 hours of sunlight daily.
  • Use Rich, Loose Soil: Well-draining soil packed with compost gives plants a healthy start.
  • Water Consistently: Shallow-rooted crops like leafy greens dry out quickly—water regularly.
  • Succession Planting: Replant fast growers every 2–3 weeks for continuous harvests.
  • Try Containers: Many fast-growing veggies are perfect for container gardens, patios, and balconies.

Gardening doesn’t have to be a long waiting game. With these fast-growing vegetables, you can enjoy the taste of success in just a few weeks.

Whether you’re new to gardening, short on time, or want to get kids involved, these crops are a great way to grow food efficiently and enjoyably.

So grab your seeds, prep your soil, and get planting—because your first harvest could be just around the corner!

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