Last edited by shiny on 2 Nov 2026. View history

Red Burgundy Onion

No scientific name recorded

How to sow red Burgundy Onion: Direct seed indoors or plant sets (small bulbs) outside.

Sun requirement for red Burgundy Onion: Plant in Full Sun

Red onions are onion cultivars that have purplish red skin and white flesh tinged with red. They are members of the Allium family along with garlic and leeks. They have a sweet to mild flavor and can be eaten raw (in salads and guacamole), grilled, sautéed, or baked. Make sure to choose a variety suited to your day length.

3: plantings
5: harvests
0: seed packets

Growstuff is a free, community-run site for people who grow food. Keep track of what you plant and harvest, find seeds to swap, and see what is growing near you. Join to record your own red Burgundy Onions.

Red burgundy onion facts

Lifespan

Annual living and reproducing in a single year or less

42 weeks median lifespan

First harvest expected

26 weeks after planting

Last harvest expected

41 weeks after planting

Grown for

whole plant harvested 4 times

What are growing degree days?

A plant grows with warmth, not with days. A growing degree day is one day's worth of useful warmth: how many degrees the day's average temperature is above the lowest temperature the crop grows at. Add them up from planting and you know how far along the crop is, whatever the calendar says.

Say that lowest temperature is 10°C. A day averaging 17°C gives 7 growing degree days. A day averaging 8°C gives none, as it is too cold for the crop to grow. That is why the same lettuce takes about 50 days in a summer and 90 in an autumn: it needs the same total warmth either way.

For red Burgundy Onion, the FAO EcoCrop database gives a lowest growing temperature of 4°C and a shortest growing cycle of 85 days at its best temperature, about 1233 growing degree days to a first harvest.

Where you've told us where your garden is, we use this and the weather there to predict when your red Burgundy Onion will be ready to harvest. We don't use it for how long a plant lives or when it finishes: we go by what members have logged for that.