Is It Worth Saving Radish Seeds? How to Collect and Grow Your Own

So, is it worth leaving some of your radish to go to seed? Let’s find out!

I used to quite like radish and would include the token cut-up one in a salad or roast them in the oven with olive oil. They were a little underwhelming, fairly pleasant but quite forgettable when I remembered to eat them. That is, until I discovered how the French eat them. Oh my goodness, it was a game changer!

Now, hear me out. It sounds odd and doesn’t seem like it would work, but this is how, in my opinion, radish should ALWAYS be eaten: take some fresh French bread and cut a slice. Spread it with thick, proper salted butter (none of this spreadable stuff, thank you!) and put a couple of layers of sliced radish on top. Finish with flaky sea salt, and don’t be shy with it (Maldon is my favourite). Now go in for the kill. Honestly, you won’t know what’s hit you! Try it, you won’t be disappointed. In fact, I’m just going to take a break from writing this to go and make one now.

Delicious. I used Cherry Belle radish for this one, and I’d forgotten how good they are! Okay, enough about my radish sandwich, back to the original question: is it worth saving radish seeds?

Radish are incredibly fast growers. The seeds are perfect to sow among slower-growing crops, taking advantage of the space before those crops fill out. From sowing to harvesting, radish only take about 3–4 weeks, making them ideal for impatient gardeners like me, or those new to growing vegetables.

Waiting for them to flower and go to seed, however, takes much longer. From sowing to flowering takes about 4–6 weeks. First, the radish will bolt (meaning it sends up a flower stalk), then it will produce pretty flowers for about 2–3 weeks before forming seed pods. The flowering stage is lovely, but the pod stage is less attractive.

You then need to let the seed pods mature and dry on the plant, which takes another 7 or 8 weeks after flowering. The pods start out green and soft, transition to slightly red, and finally turn brown. Once brown, they must dry further until they become papery. You can see from the photo, that some have started to go to the papery stage, but several are still green, meaning they need longer on the plant. However, you can eat the pods at the green stage.  They're slightly crunchy, a bit peppery, and nice raw in salads or stir-fries. When they’re ready to harvest the seeds, you can remove the pods from the stems, crack them open, and find a few seeds inside each one.

From sowing to collecting radish seeds takes about four months. It’s a fairly laborious process to actually harvest them, as each pod only contains 2–8 seeds. However, a single radish plant can produce dozens of pods, meaning you can easily harvest over a hundred seeds from just one plant. It’s fiddly but surprisingly satisfying, and there’s no denying that harvesting your own seed from a plant you grew yourself is one of the most rewarding gardening experiences. It’s the magic of the growing cycle; a single seed can give us so much. I just love how Mother Nature works!

So, if you’re happy to let your kitchen garden or veg patch look a little rustic for a few months while nature does its thing, and you’re willing to spend a little time preparing your harvest to sow again, then saving radish seed is absolutely worth it. I find great joy in it. But there’s also plenty of pleasure in letting someone else do that work, buying fresh seeds, and enjoying the harvest without the extra effort. 

Does this answer the question? Maybe, maybe not! But why not give it a try? If you change your mind halfway through, just pull the plants up, toss them on the compost heap, and sow fresh seeds. Either way, it all goes back into the cycle.

Today, I’m enjoying radish grown in our test garden from seeds we saved from last year. Whether you collect your own seeds or buy a new packet, growing and enjoying radish is always rewarding.