Photos
We've had heaps of rain. The area flooded. Also the radishes split.
black Spanish radish
Raphanus sativus
Last edited by shiny on November 10, 2026. View history
Radish
Raphanus sativus
WD
How to sow radish: Direct seed outdoors
Sun requirement for radish: Plant in Full Sun
Radishes are fast-growing cool season root vegetables in the Brassica family. Their taproots come in variety of shapes, sizes, and colors and have a sharp, spicy taste. They are usually eaten raw and added to salads. Radishes need cool weather and moist soil - they do not do well in hot, dry environments. More growing information is available in individual species entries.
- 66
- plantings
- 28
- harvests
- 14
- seed packets
Radish facts
Lifespan
Annual
living and reproducing in a single year or less
9 weeks
median lifespan
First harvest expected
6
weeks after planting
Last harvest expected
8
weeks after planting
Height × spread
15cm × 8cmRow Spacing
10cmGrown for
bulb harvested 10 times
Optimal temperature
12–25 °C
Absolute temperature
3–30 °C
FAO EcoCrop
Optimal rainfall
800–1000 mm/year
Absolute rainfall
500–2800 mm/year
FAO EcoCrop
Optimal soil pH
6–7
Absolute soil pH
5.2–8.3
FAO EcoCrop
Crop cycle
21–135 days
FAO EcoCrop
Max altitude
2000 m
FAO EcoCrop
Optimal light
clear skies
FAO EcoCrop
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 radish, the FAO EcoCrop database gives a lowest growing temperature of 3°C and a shortest growing cycle of 21 days at its best temperature, about 326 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 radish 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.
Growing radishes
- Dig the bed fine 1 week before sowing
- Water regularly at sowing every week
- Thin the seedlings 1 week after sowing
- Sow another batch 2 weeks after sowing every 2 weeks
- Pull the radishes at first harvest
- Pull out plants that have bolted 3 weeks after first harvest
How members grow radishes
Sunniness
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Planted from
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Harvested for
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Varieties of radish
Cherry Belle Radish
Brassicaceae Raphanus sativus
daikon
Raphanus sativus Longipinnatus group
aomaru koshin daikon
Raphanus sativus
purple daikon
Raphanus sativus
tokinashi daikon
Raphanus sativus
watermelon radish
Raphanus sativus
Plant radishes with
Photos
Radish crops
Radish plantings
Radish harvests
Radish seeds
Video
Where radishes grow
Only plantings by members who have set their locations are shown.
What people are saying about radishes
New website features (release 55)
by shiny,
If you notice any bugs or think of new features please let us know on our github or comment here.
We've got new crop cards on browsing crops or a [planting](https://www.growstuff.org/plantings/shiny-indoors-tomato-75b2e492-9f71-42f6…
lettuces
sunray tomatoes
Te Māori taewa potatoes
eggplants
radishes
Read more
New look, new features
by shiny,
If you notice any bugs or think of new features please let us know on our github or comment here.
We've got new crop cards on browsing crops or a [planting](https://www.growstuff.org/plantings/shiny-indoors-tomato-75b2e492-9f71-42f6…
lettuces
sunray tomatoes
Te Māori taewa potatoes
eggplants
radishes
Read more
First strawberry!
by neotoma,
I had the first tiny strawberry of the season today! I'm looking forward to many more.
Also, I transplanted a lot of seedlings into the community garden today: 2 cucumbers, 3 green beans, 2 tongue-of-fire beans, an ornamental [sweet potato](/crops/swee…
cucumbers
green beans
sweet potatoes
artichokes
lettuces
radishes
carrots
parsnips
sunflowers
strawberries
Read more
cucumbers
State of the Spring Garden
by black_hound,
Finally some seasonably warm weather.
The peas are shooting up rather quickly. The lettuce has sprouted. Beets are up. Turnip are getting their second set of leaves so I will be thinning them out this week. Radish going strong. And I believe I…
lettuces
turnips
radishes
Swiss chard
beets
Read more
Growing Status
by black_hound,
I have been concerned about my pea planting because we had some unseasonably cold weather after I planted them. But I see a few sprouts from the Cascadia and Mammoth Melting snap peas. The Green Arrow shelling peas have no sprouts so I replanted them today.
[Tu…
snap peas
turnips
radishes
beets
Read more
Who's planted radishes
- shiny Aro Valley · Wellington, NZ
- trishf42 Cherry Belle Radish Raised Veg garden 1 · Woomelang, AU
- bigblen french breakfast radish Garden · Rapaki Road,...
- Fabpk90 cha
- Itsverbiage Garden
Radish harvests
-
Alpinefolk harvested 2, weighing 0.2 kg.
over 6 years ago
-
Alpinefolk harvested 3, weighing 0.19 kg.
over 6 years ago
-
Alpinefolk harvested 3, weighing 0.19 kg.
over 6 years ago
Alpinefolk harvested 2, weighing 0.2 kg.
Find radish seeds
View all radish seeds
- Purchase seeds via Ebay
- Sign in or sign up to list your seeds to trade.
Time to harvest
If sown now, expect a first harvest in about 21 to 135 days.
From the growing cycle in the FAO EcoCrop database, which is the same wherever it is grown.
Ecological requirements
Data from the FAO EcoCrop database for Raphanus sativus var. radicula L. [Pers]
| Family / Taxonomy | Magnoliopsida Dilleniidae Capparales Cruciferae |
|---|---|
| Life form | herb |
| Life span | annual, biennial |
| Habit | erect |
| Optimal soil depth | medium (50-150 cm) |
| Optimal soil texture | medium, light |
| Optimal soil fertility | high |
| Optimal soil drainage | well (dry spells) |
| Optimal soil salinity | low (<4 dS/m) |
| Photoperiod | short day (<12 hours), neutral day (12-14 hours), long day (>14 hours) |
Learn more about radishes
Resources outside Growstuff.
