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If your tomato plants don't give a bumper harvest, it might not be down to how you're nurturing them. Instead, it might be the fault of a poor growing bag.
Which? Gardening has tested seven growing bags, and the good news is we found three excellent peat-free bags that gave us abundant harvests of cucumbers. In fact, these Best Buy grow bags gave us almost twice as many fruits as the lowest-scoring bags.
Discover which are the best grow bags.
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Which? Gardening tests grow bags every year, as we know they're an easy way for gardeners to grow tomatoes, cucumbers, aubergines, chillies and peppers, either in the greenhouse or on the patio.
Most of the bags we tested this year were peat-free, marking a huge turnaround from only a couple of years ago, when most growing bags were filled with peat-based compost, and many had a very high percentage of peat.
Handy tips on how to get the most from peat-free composts.
Grow bags can be used in a greenhouse, but if you don't have one, place them in a sunny spot such as on a patio.
Find out everything about how to grow summer veg in our guides, including which varieties taste best and give the best harvests.