Radishes will be ready to harvest quite rapidly, as soon as three weeks after planting for some varieties. For most varieties, harvest when roots are approximately 1 inch in diameter at the soil surface. Pull one out and test it before harvesting the rest!

How do I know when my radishes are ready?

Radishes can be picked when they're quite small up to when they are a few centimetres across. The earlier they are picked, the more sweet and tender they are, so don't leave them in the ground for too long.

Can radishes be left in ground too long?

Unlike carrots and beets, radishes do not get sweeter if stored in the ground. If you leave it too long, the radish will simply get spicier. If you have more radishes than you can eat at one time, try succession planting your radishes instead of planting a large area at once.