Growing from seeds indoors

I planted several varieties of perennial flower seeds indoors in containers containing sphagnum. Some seeds have reached the true leaf stage and I now want to transfer them to potting up pots made of biodegradable material. Should I use sphagnum…

Where to buy potting media

I am having problems locating the following in Toronto, for ferns, orchids and violets. Where can I buy the following ( horticultural grade) products? Charcoal, medium coarse sand, mica, sphagnum Moss (Lee Valley carries low grade New Zealand), fir bark,…