Here is how I will be starting seeds in my hoop house in early March. Thought I would share as it is a very good method for winter sowing. Since heat rises, it is a good idea to store these mini pop bottle greenhouses up high. So the bottles are supported by the caps, at the top of the hoop house. I am also going to put some in the covered raised bed
, but in this part of the greenhouse
the temperatures can get well over 30 Celsius even in -10 Celsius weather, so I will have to be careful doing this. You could also use smaller water
bottles for this as well. Eventually, the plastic will need to be recycled but in the meantime rather than just throw away your bottles to be recycled immediately, why not upcycle them for a few years of use right? I am also using rotten straw
as a potting soil substitute, it works really well and I grow everything in straw from straw bales that have been conditioned with fertilizer to aid in composting
. So no need to buy potting soil. You will have to ignore the condition of the seedlings in the picture, I planted those in November and they have been dormant all winter. Also, make sure you drill holes in the bottom of the bottles for drainage.
Just in case anyone is wondering, the bottles are cut around the bottom and the wire is holding them back together. The wire I used is a piece of steel tig welding wire, similar to that of a clothes hanger. which would also work. When you want to remove the plants, just remove the wire. To water, the plants just unscrew the bottle from the lid and use a bottle like a dish soap
bottle to put water in there, or a spray bottle. These do not need to be watered very often especially in cold weather, I would say once every 2-3 weeks, in the winter even less.