March–AprilSow according to product guidance and give seedlings light immediately.
- Germination and temperature
- Germination: around 18–24 °C according to the producer. Needs light to germinate: do not cover with soil.
- After emergence
- Keep the seed row identifiable, moist and weed-free. Give any tray-grown seedlings enough light after emergence.
- Pricking out and potting on
- Thin a direct sowing according to the growing aim. For raising in pots, follow the supplier’s instructions and keep the root ball intact.
- Hardening off and planting out
- Direct-sown plants stay in place. If the packet says to start in pots, acclimatise them gradually before planting out.
Tree spinach is an annual leafy vegetable. Give the tall plants enough space later. The period shown follows the named producer; check your own cultivar and growing aim.
Sources and use
Magic Garden Seeds · Boomspinazie / Magenta Spreen ↗Nederlandse producent of teeltbron; de rasinstructie blijft leidend.
Feggies · Boomspinazie veelkleurige zaden biologisch ↗Nederlandse producent of teeltbron; de rasinstructie blijft leidend.
Guideline periods for the Netherlands and Flanders. Check the variety, available light, soil and measured temperatures. Greenhouse heating does not guarantee enough winter light.