GMSgrowsanswered grow question 5 years ago Hey. If your soil has nutes already then no, no ferts right away. Best way to know if your new girls need food is to watch the stems of your leaves. If the stem starts going red or purplish then your plants are wanting more food. If their a purple plant by trait then you dont judge that way. I grow soiless and just in the ground for outdoors.
When you do start to feed your plants only give half what the label says and keep an eye on your girls and see how they react. Up the feed a little if you think they need it. Dark green, to much nitrogen so back off. Leaf claw comes after that. If your growing in soil I would only feed them once a week, unless you see a lot of red in those stems, then give them a little extra. Always water more than feed to keep salts from building and creating all sorts of problems. Hope this helps cheers.