Mustard Spinach Tendergreen HEIRLOOM Seeds

Mustard Spinach Tendergreen HEIRLOOM Seeds

Brassica rapa subsp. nipposinica

Item #0268

30-60 days. Often called Mustard Spinach or Spinach Mustard, it’s neither mustard nor a spinach. Japanese cooks call it Komatsuna. Whatever its name, this delicious, leafy green is milder than other mustards, very easy to grow, and produces flat, smooth, dark, glossy green leaves that can be picked as baby greens or grown to full size. Hardy and productive plants are slow to bolt and tolerate cold, heat, and dry conditions; although best results in cool weather.

This packet sows up to 266 ft.

Seedling Image

Days to Emerge:
5-10 days

Seed Depth:
1/4"

Seed Spacing:
A group of
3 seeds
every 8"

Row/Mound Spacing:
18"

Thinning:
When 4" tall
thin to 1
every 8"


When to sow outside: RECOMMENDED. 4 to 6 weeks before average last frost or as soon as soil can be worked, when soil temperature is at least 40°F, ideally 60°‒75°F. Successive Sowings: Every 3 weeks until 10 to 12 weeks before average first fall frost for continuous harvest. Mild Climates: Can be sown in late fall through winter for cool season harvest.

When to start inside: Not recommended

Harvesting: Start harvesting leaves when they are 2 inches tall, as needed, or let plant grow to maturity and remove entire plant.

Artist: Libby Kyer



Send your photo to us

Learn & Grow

View all Articles

The Secret is in the Soil

What is Soil?

Soil is a diverse mix of substances, teeming with life and composed of minerals, decayed plant and animal matter, water, and air. It…

More…