Cuttings have roots, transplant question
A month ago, I started cuttings in 60, 16-oz plastic cups filled with a mixture of potting soil and extra perlite. The cups are inside of clear tubs serving as mini-greenhouses. Now the roots are growing out of the holes in the cups of 50 containers. I think it is time to transplant them. My questions:
1) What type of potting soil should I use?
2) Should I go straight from the 16-oz cup to a 1 gallon pot?
3) Now that they have roots, when should I start fertilizing, and what should I use?
4) It is June now. Will the plants be big enough to plant outside this fall? Or should I plan on overwintering them in my greenhouse?
Thanks for your help!