I have some bag seed plants going in pots now and will transplant outside soon. they are 3 weeks old, one is about 7 inches. when is it ok to start bending them over? i want to try LST method instead of cutting the top. thanks
The sooner you bend, the sooner you get it's benefits. When you start really depends on how big or small your hands are. If they're big, you may not want to handle a 2" plant. If they're small, you need not wait for 7".
Note sativas stay pliable throughout their life, You can tie a mature sativa in knots and it wont blink. Indicas are stiffer and subject to snapping or splitting (tie them back up and they'll be fine). Rather than bend the base of an indica, bend the tip like a candy cane. That will be enough to jump start lower growth.