Greenhouse Growing Question

Hi I'm currently growing two critical mass feminised strains in my dads greenhouse. I germinated in soil and the plants have sprouted to about 2 inches in height. Due to the summer months I'm worried about the dark time these plants will get. How important is this when growing from natural sunlight in a greenhouse. Should I get a cover?. This is my first time growing and I don't want to kill my babies. I've gotten quite attatched . Oh by the way they were planted about 2 weeks ago. Any other info you might need just ask. Thanks.

during veg the plants need over 14 hours of light. if you plan to induce flowering before fall, yes you will need to protect the plants from the light. I hope this helps