My greenhouse plants are healthy but there is mould growing on the soil. Why and what should I do about it?
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Answers:
You will get the mould on the soil if the watering regime has been inconstant.
If you are anything like me you will give everything a good watering then leave them a little too long and they will dry out a little too much before you water again. This moist then dry condition encourages the growth of all types of moulds & fungi.
Scrape the layer of mould off the plants and put it on the bin (not into any compost you may be making). Take the opportunity to make sure that the soil below this top layer has not become compacted or got a pan (a hard layer in the soil where the water will not pass below) by stirring the soil up a bit (be gentle!).
Replace the top bit of compost with more clean stuff - I find a loam based one is better just because it is less prone to the wet/dry thing than the peat based composts.
Good luck!
over watering.
i have this to its not a problem you could hoe it in or cover it with a mulch it down to watering then drying out dont worry
This could be due to unripe compost. It is not harmful to the tomato plants. It could also be that you are not airing in the greenhouse regularly. This must be done daily, whether it is hot or cold. Fresh air is always needed to avoid fungal growth. The mould on the soils can be raked away, it will die away when the soil is kept dry on the surface. Or if it bothers you, just put a light muching over it.
Sounds like a ventilation problem.
Lots of good answers so far. I'd suggest that it might be too much fertilizer water. If it's white and not really mold, just scrape it off, give the plants a good clear water flushing next time they need watering, and see if that helps. Easy on the fertilizer.
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