This year I will be trying using seaweed extract (available from the Trading Store) on my onions, having had great success with it last year on leeks. I will also be cutting down on high-nitrate fertiliser and dressing the soil with superphosphate (also available from the Trading Store), in an attempt to produce stronger roots and more disease-resistant foliage. Click here to go to an interesting article on using seaweed extract when growing onions.
Yes, sets are easier, and if you have experienced no disease problems, go ahead. However, experience has shown that seed-grown plants are less vulnerable to basal rot. As far as grey mildew goes, you can choose a mildew-resistant variety such as 'Santero' (shown above). Click on the picture to go to Kings Seeds website, do an online search or check out Wilkinsons or your garden centre.
Kent's climate is drier, hotter and has a longer growing season than the average for the UK. Advice in gardening books may not fit Kent. This blog has local tips on what will grow and when to do garden jobs.
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