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Sweeter than onions and milder in flavour, shallots can be pickled or used in place of onions when cooking. Related to the onion, shallots can be grown from sets (small bulbs), both in autumn and spring. From one set, a fresh group of shallots will grow in clusters at the base. Most varieties are much smaller than onions and have finer layers, but they store just as well – if not better. There are both rounded and long (banana) types to choose from.
The experts at Which? Gardening magazine grew and tasted 11 varieties of shallots to find you the best ones to grow.
January | February | March | April | May | June |
PLANT | PLANT | ||||
July | August | September | October | November | December |
HARVEST |
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Variety | Overall rating | Yield from 12 sets (kg) | Skin quality | Uniformity |
★★★★★ | 1.1 | ★★★★★ | ★★★★★ | |
★★★☆☆ | 1.1 | ★★★★☆ | ★★★★☆ | |
★★☆☆☆ | 0.7 | ★★★★☆ | ★★★☆☆ | |
★★☆☆☆ | 0.2 | ★★☆☆☆ | ★★☆☆☆ | |
★☆☆☆☆ | 0.1 | ★★★☆☆ | ★★★★☆ |
Variety | Overall rating | Yield from 12 sets (kg) | Skin quality | Uniformity |
★★★★★ | 1.6 | ★★★★★ | ★★★★★ | |
★★★★★ | 1.5 | ★★★★★ | ★★★★★ | |
★★★★☆ | 1.3 | ★★★★☆ | ★★★★☆ | |
★★★★☆ | 1.2 | ★★★☆☆ | ★★★★☆ | |
★★☆☆☆ | 0.9 | ★★☆☆☆ | ★★☆☆☆ |
USING THE TABLE OVERALL RATING The more stars the better. Rating ignores price and is based on: yield 60%; skin quality 20%; uniformity 20%
At the beginning of March, we planted 12 sets of each variety. We planted all our shallots into a well-fertilised bed at the Which? Gardening magazine trial ground at Capel Manor, north London, planting the sets with the tips just below soil level to deter curious birds from plucking them out. We harvested all shallots in early July 2020.
We rate each varieties for: the weight of the usable bulbs we harvested, discarding any bulbs that are too small or misshapen; if we got good-sized bulbs with smooth skins; whether the bulbs were the same size with not too many large or small ones; any problems the plants suffered as they grew.
Plant sets in March or early April so that the tip is just below the soil surface; otherwise, birds will pull them out again. Use a trowel to avoid damaging the set. Space sets 15cm apart in rows 30cm apart, or 23cm apart each way, if you prefer.
You can also plant in autumn, but we found that many are lost to wet conditions in winter so wouldn't recommend it.
Apart from regular weeding, shallots need little attention until mid-summer.
When the tops fall over, usually in July, the bulbs are ready to dry off for storage. Lift the clump to break the roots and leave them to bake in the sun. If it’s wet, finish drying them indoors. Fully ripened and dried shallots should store into the spring.
Onion white rot is a soil-borne fungus. Symptoms include yellow and wilting leaves and rotting roots. A white fluffy fungus can be seen on the base of the bulb near the roots.
There is no treatment for white rot, so don’t plant onions or shallots where this has previously been a problem. Avoid transporting it to other sites on contaminated soil on dirty tools or muddy boots.
Read more about onion white rot.