Tatsoi vs Mizuna for Hydroponic Growing (2026)
Tatsoi and mizuna both harvest in 18–35 days but tatsoi forms compact spoon-shaped rosettes at 50–100 g while mizuna produces feathery leaves at 35–65 g - tatsoi yields more per plant and mizuna grows faster at the low end of the range.
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Tatsoi and mizuna are both Asian salad greens in the Brassica family, thriving at low EC and cool water temperatures. Mizuna is fractionally faster (18-day minimum vs tatsoi's 21-day minimum) and produces feathery, mild leaves (35–65 g) ideal for salad mixes. Tatsoi forms attractive spoon-shaped rosettes with higher yield ceiling (50–100 g) - better as a whole-plant restaurant product.
Side-by-Side Comparison
| Feature | Tatsoi | Mizuna | |---------|--------|--------| | Difficulty | Easy | Easy | | Days to First Harvest | 21–35 | 18–28 | | pH Range | 6.0–7.0 | 5.5–6.8 | | EC Range (mS/cm) | 1.0–1.8 | 0.8–1.6 | | Light (h/day) | 10–14 | 10–12 | | Water Temp (°C) | 15–22 | 15–22 | | Yield per Plant | 50–100 g/baby | 35–65 g/baby | | Key Flavour Profile | Mild, slightly sweet | Feathery, mild, subtle mustard |
Where Tatsoi Wins
- Higher yield ceiling (100 g vs mizuna's 65 g per equivalent plant).
- Visually distinctive spoon-shaped rosette form - strong whole-plant presentation for premium retail.
- Wider light tolerance (up to 14 h vs mizuna's 12 h maximum for optimal growth).
Where Mizuna Wins
- 3-day earlier minimum harvest (18 days vs tatsoi's 21 days).
- Lower minimum EC (0.8 vs tatsoi's 1.0) - compatible with very dilute systems.
- Feathery leaf texture integrates better into mixed baby-leaf and mesclun blends.
Growing Them Together
These are ideal system-mates. Both share cool water preference (15–22°C), overlapping EC (1.0–1.6), and pH overlap at 6.0–6.8. Light schedule overlap is 10–12 h. They can share the same NFT channel or DWC raft with minimal parameter adjustment. Stagger sowing by 3 days to harvest both simultaneously.
Which Should You Grow?
- Choose Tatsoi if you sell whole-plant rosettes to restaurants or farmers' market customers who value the distinctive form.
- Choose Mizuna if you supply a salad mix product or mesclun blend where feathery leaf texture and mild flavour are required.
- Grow both if you want a Japanese-inspired mixed salad green product - tatsoi and mizuna together make a visually compelling, flavour-balanced combo.