I am hoping to grow some tuberous Begonias this year. They will be in pots, and not having any previous experience, I am unsure wether to use Multi-Purpose compost or one of the J.I.s, such as No 2. All advice gratefully received!
I use bq multipurpose compost with a handful of bonemeal and a shake of fertilizer mixed through it brfore first then plant the sprouted tuber. I'm trying the trailing ones this year and have started them off under our bed and will plant these the same way 😀