[angelgoob]

low-nutrient, high-drain soil? Worms?

Microbes?

Warmth? Let dry and as it dries, roots with root hairs?

hormones? cinnamon?

[master kusher]

IMO seedling don't take well to the suns direct strong rays, or any strong rays. They'd rather be in the shade or not too close to a light. They need frequent watering(at least once a day), and don't need any supplemental nutrients. I use 16 oz solo cups for mine as they are cheap and many can be fit into a small area.

[zeke99]

high humidity 65-70% and 80 F temperature

[troutman]

This is what I've done for over a decade now with no issues:

1. Grow them in a good potting soil.
2. Start them under fluorescent lighting with my old T-12's and the newer T5's.
3. Don't feed them until they make their 3rd set of real leaves.

Too many new people try feeding them too early and fry them.

[angelgoob]

flourscents vegg well.
Potting soil is usually high drainage.
I just fed them on their 3rd set. Good old organic piss. Swear to god I did.

Those floodlight LED full spectrum also work good for vegging. Lil expensive thought. $12 for a 1200 lumen 15 watt. But hey now I have extra light.

[HqFarms]

One of the best tips I can add is to water them with a spray bottle. With soil or coco you want the keep the media slightly moist and allow dry cycles. Avoid getting your media saturated. With coco after they have their third set of leaves you can feed everyday and you can now top feed. With soil, depending on how hot it is, you can go up to three weeks with no food

[jaybodankly]

All good tips. I add some dried seaweed in the bottom of the cup. Nice and easy first nutes.

[farmerlion]

If they won't stand up strong on their own. Cull them and start over with another seed. Don't waste your time on weak plant. Peace

[Betterhaff]

Originally Posted by farmerlion

If they won't stand up strong on their own. Cull them and start over with another seed. Don't waste your time on weak plant. Peace

Sometimes leggy seedlings can be the result of insufficient lighting. I’ve had seedlings that needed support and eventually strengthened when put under stronger lights and they turned out to be great plants and smoke.

I do agree with you about wasting time and space on dud plants though, many times I have nursed them along to only be disappointed in the end.

[Lester Beans]

Everyone is different in their opinions.

As far as too strong of light, a myth. Ever germinated seed under the sun? Yep it works. I use a 1000hps.

Too hot of a soil, depends what's in it. I germinate in straight worm castings and perlite.

The key to healthy seedlings is to not over water, have good air circulation, decent humidity, and good light.