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I direct seeded my garden but after I thinned, then transplanted my seedlings a lot of them died. What did I do wrong?

Last Updated: November 14, 2011

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Usually seedlings do become overcrowded when direct sown. There are two options: transplant the crowded seedlings or thin and discard them. Transplanted seedlings need to retain as much of the surrounding soil as possible, just as with a bedding plant. Take care to not disturb the root system. The best way to accomplish this is to start seeds indoors (instead of direct planting) before the end of winter, basically creating a bedding plant, to be transplanted after danger of frost. Of course, transplanted seedlings also need to be watered and mulched. Alternately, if you wish to direct sow, just pull out and discard the weaker seedlings, thus avoiding transplanting seedlings at all. If you are determined to preserve all the seedlings and they're spaced too close together, these seedlings will need to be moved and protected while they make the adjustment to a new location. Don't transplant your seedlings too young, make sure they have a sturdy stem, and then be sure to mulch, water well and protect them from the sun for a few days. One method of protection is a floating row cover or temporary tarp or canopy that gives transplanted seedlings, bedding plants and young plants some shade until they are strong enough to withstand the heat. The tarp is mounted to tie rods at each end and in the middle above the planting area so air can circulate and the sprinkler can still run. The end ties are loose and the middle connections are tight so that the ends can be lowered and anchored during a storm, similar to a pup tent. Next year, or for late plantings this year, avoid having to thin seedlings by planting each seed at the prescribed depth and distance apart as noted on the seed packet.

Browse related Faqs by tag: horticulture, colorado, vegetable and herb gardening, transplanting, thinning, row covers


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