Propagation – Using Milk Jugs
Q: What is your opinion of winter sowing outdoors in translucent milk bottles? I’ve read that people do it even into Zone 5!
A: It’s something I’ve read about but never tried. So I’ve collected some milk bottles and I will be starting my trial this afternoon!
After three months, see my results below.
I chose beet and poppy seeds. After cutting the jugs and poking lots of holes in the bottom part, I filled them with a 1:1 mix of potting soil and perlite.
I sowed the seeds and taped the jugs back together. These were left on a bench on my patio from Jan to March. When I opened the jugs there were dozens of seedlings inside.
I transplanted them carefully to the garden and they grew normally.
This seems like a great way to grow seedlings of plants that need cold weather to germinate!