Nasturtium Growing Guide

All you need to know to grow successfully!

Plant Family:
Plant Type:

Square Foot Spacing:

Typical Season:
Typical Zones Grown In:
3, 4, 5, 6, 7, 8, 9, 10
Growing Difficulty:

Nasturtium is an easy-to-grow, edible annual flower with beautiful, vibrant flowers and round, lily-pad-like leaves. Its scientific name is Tropaeolum majus, and it is native to South America. Nasturtiums are available in a range of colours including orange, yellow, and red, and they bloom in summer and fall. They are also known for their peppery taste, which makes them a great addition to salads and other dishes. Nasturtiums can be grown in the ground or in containers, and they are a great choice for beginner gardeners as they are low-maintenance and have few pest problems.

How to Grow Nasturtium Organically

  1. Choose a planting site: Nasturtiums prefer a sunny location with well-draining soil. They can tolerate some shade, but will not flower as much.
  2. Start seeds or buy transplants: You can either start nasturtiums from seed indoors about 4-6 weeks before the last expected frost date, or purchase established plants from a garden centre.
  3. Plant the seeds or transplants: If starting from seed, plant the seeds about 1/2 inch deep in potting soil and keep the soil moist until the seeds germinate. If planting transplants, dig a hole slightly larger than the root ball and place the plant in the hole. Cover with soil and gently press down.
  4. Water the plants: Nasturtiums prefer to be kept moist, so water deeply once or twice a week, depending on weather conditions.
  5. Fertilize the plants: Nasturtiums do not require much fertilization, but you can apply a balanced fertilizer, such as a 10-10-10, once a month during the growing season.
  6. Provide support: Some nasturtiums can grow up to 6 feet long, so they may need support such as a trellis or netting to prevent them from sprawling.
  7. Deadhead the plants: Removing spent flowers will encourage more blooms to form.
  8. Watch for pests and diseases: Nasturtiums can attract aphids and other insects, so be sure to keep an eye on your plants and treat any issues as they arise.

With these simple steps, you can grow beautiful and vibrant nasturtium plants that will add colour and flavour to your garden.

Planting Guidelines

The following are general guides to follow. However, nothing is set in stone. Feel free to experiment!

How to Start:
When to Direct Sow:
March, April, May
When to Start Indoors:
March , April , May
Sprouting Time:
2-3 Weeks

Ideal Temperature (C):

2.5 cm
Spacing (cm):
20 cm
Row Spacing (cm):
1-2 feet
Sun Exposure:
Full Sun
Maturity Time:
4-6 Weeks
When To Harvest:
June, July, August, September
How to Harvest:
Cut Flower Heads, Leaves, Flowers

Health Benefits

Growing your own food is one of the best things you can do for your health. Let’s check out some of the health benefits!

Is It Edible?
Edible Parts:
Leaves, Flowers
Potential Health Benefits:
Vitamin C, Antioxidants

Tips to Growing Organically

Growing without the use of pesticides and herbicides is easier than you may think and it’s better for the environment!

Companion Plants:
Corn, Radish, Onion, Carrot
What Plants to Avoid:
Common Pests:
Aphids, Whiteflies, Spider Mites
Common Disease:
Downy Mildew, Root Rot
Bonus Grow Tips:
Plant in sunny location, harvest flowers when they are fully open

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