I have a number of seedlings of P. lusitanica that have sprouted, and they are begininng to crowd each other in the pot. The largest are about 1/2" across, smaller ones about 1/4". Are they big enough to separate out into individual pots, or should I bother? Will the crowding be harmful? I'm not sure how tolerant this species is to handling, especially when small. Any advice would be greatly appreciated.