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Compost that sticks together
At this time of the year I am sowing a number of seeds in pots in a
slightly warmed (i.e.frost free) greenhouse,prior to pricking them out into modules.I usually use a mixture of multipurpose (3parts),John Innes(1 part) and grit sand(1 part).I nearly always obtain good germination,but inevitably get good germination around the edges of the pot,but not so good in the centre.The compost (about 2" diameter) seems to lift up together thus stifling the germinating seeds underneath.I can sometimes rescue some by shaking the pot to break up the central stuck compost,and other times water the compost to break it up.What am I doing wrong?Michael |
#2
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Compost that sticks together
The message
from michael contains these words: At this time of the year I am sowing a number of seeds in pots in a slightly warmed (i.e.frost free) greenhouse,prior to pricking them out into modules.I usually use a mixture of multipurpose (3parts),John Innes(1 part) and grit sand(1 part).I nearly always obtain good germination,but inevitably get good germination around the edges of the pot,but not so good in the centre.The compost (about 2" diameter) seems to lift up together thus stifling the germinating seeds underneath.I can sometimes rescue some by shaking the pot to break up the central stuck compost,and other times water the compost to break it up.What am I doing wrong? Overwatering, I'd guess. And the other thing is using pots instead of trays. -- Rusty Growing old is mandatory; growing up is optional. Direct reply to: horrid dot squeak snailything zetnet point co period uk |
#3
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Compost that sticks together
michael wrote:
At this time of the year I am sowing a number of seeds in pots in a slightly warmed (i.e.frost free) greenhouse,prior to pricking them out into modules.I usually use a mixture of multipurpose (3parts),John Innes(1 part) and grit sand(1 part).I nearly always obtain good germination,but inevitably get good germination around the edges of the pot,but not so good in the centre.The compost (about 2" diameter) seems to lift up together thus stifling the germinating seeds underneath.I can sometimes rescue some by shaking the pot to break up the central stuck compost,and other times water the compost to break it up.What am I doing wrong?Michael I don't know. I always use 2 parts of multipurpose compost to one part of sharp sand with good results. It seems to hold moisture well without getting waterlogged or clogging together. -- David in Normandy. To e-mail you must include the password FROG on the subject line, or it will be automatically deleted by a filter and not reach my inbox. |
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