How to Sow Dutch Brown Onion Seeds
Known as dutch rijnsburger, this variety of onion has copious amounts of very sweet white flesh. With crispy brown skin and a large body. Dutch onion is the ideal addition to a wide variety of dishes. From salads to burgers, once harvested expect a long shelf life from healthy onions. Commonly grown in greenhouses, gardens and allotments.
Growing Dutch Rijnsburger Brown Onions from Seed
- Can be sown indoors at any time, providing a minimum temperature of 15 degrees celsius. If sowing outdoors, start seeds from Feb until late April.
- Best sown under/behind glass, in seed pots or seed trays. Using a high quality seed compost, spread seeds sparingly over the surface. Only cover lightly, with vermiculite or compost.
- If sowing in the ground outdoors, plant seeds around half an inch deep in shallow drills. Ensure the ground is well worked and not clumped.
- Seedlings which have been sown behind glass, can be placed in a cold frame for 2-3 weeks to harden them, ready for outdoor planting.
- When transplanting seedlings, be sure to allow 15cm between each one. This ensures sufficient space, for each onion to retrieve nutrients from the surrounding ground.