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I've planted some progress pea seedlings into containers on my roof, and they don't seem to be doing so well. They were starting to yellow just a tad before I transplanted them, and the yellowing has continued (it still is not severe, but I'm used to seeing that beautiful rich matte-green on pea...

Hello! I have a lot of seedlings that are almost ready to plant out into my rooftop container garden, and I am wondering... If I use a premium compost as well as some well-rotted manure or perhaps worm castings in my potting mix, can I skate by without a potash-heavy fertilizer? I am planting...

Hello all! Like many, I'm sure, I stumbled upon Mark's videos on Youtube and am now branching out to this forum. I am lucky enough to have a small rooftop space where I have mostly grown herbs, roses, and other flowering shrubs, but Mark's Youtube channel has inspired me to start growing...