The Main Plant entry for Radishes (Raphanus sativus)

This database entry exists to show plant data and photos that apply generically to all Radishes.

General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Annual
Sun Requirements: Full Sun
Water Preferences: Mesic
Underground structures: Taproot
Uses: Vegetable
Pollinators: Flies


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Posted by Marilyn (Northern KY - Zone 6a) on May 21, 2013 12:05 AM

"Radishes grow best in full sun and light, sandy loams with pH 6.5–7.0. They are in season from April to June and from October to January in most parts of North America; in Europe and Japan they are available year-round due to the plurality of varieties grown.

Summer radishes mature rapidly, with many varieties germinating in 3–7 days, and reaching maturity in three to four weeks. Harvesting periods can be extended through repeated plantings, spaced a week or two apart.

As with other root crops, tilling the soil to loosen it up and remove rocks helps the roots grow. However, radishes are used in no-till farming to help reverse compaction.

Most soil types will work, though sandy loams are particularly good for winter and spring crops, while soils that form a hard crust can impair growth. The depth at which seeds are planted affects the size of the root, from 0.4 inch deep recommended for small radishes to 1.6 inch for large radishes.

Radishes serve as companion plants for many other species, because of their ability to function as a trap crop against pests like flea beetles. These pests will attack the leaves, but the root remains healthy and can be harvested later.

Radishes are rich in ascorbic acid, folic acid, and potassium. They are a good source of vitamin B6, riboflavin, magnesium, copper, and calcium. One cup of sliced red radish bulbs provides approximately 20 cal, largely from carbohydrates."

Taken from wikipedia's page at:

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Plant Events from our members
NikkiGerena On July 10, 2017 Harvested
NikkiGerena On June 9, 2017 Plant emerged
NikkiGerena On June 2, 2017 Seeds sown
NikkiGerena On May 28, 2017 Harvested
NikkiGerena On April 28, 2017 Plant emerged
NikkiGerena On April 26, 2017 Seeds germinated
NikkiGerena On April 24, 2017 Seeds sown
Kristine1212 On April 5, 2018 Plant emerged
Kristine1212 On March 30, 2018 Seeds sown
» Post your own event for this plant

Discussion Threads about this plant
Thread Title Last Reply Replies
Is this a radish, turnip, or beet? by Bonsaishrub Jan 20, 2018 9:54 PM 7
2017 Northest Veggie Gardening by Newyorkrita Jan 18, 2018 8:32 AM 330
2017 Vegetable Gardening by Newyorkrita Feb 26, 2018 7:49 PM 2,789
What is it? by MommaHunter Aug 12, 2016 11:18 AM 5
Broccoli! Ours didn't ever develop a head... by GardensAll Aug 10, 2016 8:51 PM 8
Something horrible happened to my radishes by Kvent42 Oct 17, 2016 12:36 PM 23
How early to sow daikon Miyashige? by Shadegardener Feb 18, 2016 7:41 AM 9
Daikon radish bolting by Shadegardener Jun 22, 2015 4:17 PM 41
More on the subject of non-cultivar top-level plants by dave Nov 14, 2011 6:52 PM 69
Make an eBucket! by Gymgirl Feb 28, 2017 10:16 AM 97

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