I have been growing roses from cuttings in plastic cups since July. They are in a mix of compost/manure/sand/perlite with some rose fertilizer mixed in. I have fertilized them infrequently. Last time I fertilized them they developed a 'rusty' effect so I thought I had over fertilized. Now they look downright bad and I'm seeking advice to remedy my rose blues!
They are grown indoors under cfl light 18/6 grow schedule 70 degrees f. I soak them once they dry out.
Any advice or direction to advice would be greatly appreciated. Thanks!