Starting Cannabis Seeds In Solo Cups

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1 weeks old tomorrow I’ve just been feeding ro water at pH 6.0. When should I do my first transplant? Any suggestions? I’m using a 600 king led grow light pretty cheap paid 80 bucks for it about 20 inches away. Gonna switch once I started feeding stronger ppm. In this article, you will see how much cannabis seedlings have grown after one week under 12/12 lighting in Red Solo Cups, and under Agnetix LED lights.

Seedlings In solo cups

1 weeks old tomorrow I’ve just been feeding ro water at pH 6.0. When should I do my first transplant? Any suggestions? I’m using a 600 king led grow light pretty cheap paid 80 bucks for it about 20 inches away. Gonna switch once I started feeding stronger ppm.

19 Comments

Wait till the root stays together when u tap out of cup. If it falls apart… not ready Freddy.

Thanks for the feed back sunny

I wait till you get your first nodes and leaves span the diameter of cup!

Much appreciated feedback

I’ve never gone longer than 14 days in the cups. A nice vigorous plant and I’m getting that thing in a 1gl in 10 or 11 days. Then 2 more weeks in a 1 gl. I love transplanting.

I feed to water for the first 2 weeks after it sprouts then I’ll start low pppm like 275 right that’s what I did on my auto flower that are 2 weeks ahead of these seedlings but I just wanna make sure I don’t have to give nutes till a littler later stage I haven’t even been adding cal mag to the ro water wanna make sure I don’t burn them but they looking weak rn maybe I should start 275 now after the first week of just to water

Yeah 1st 2 weeks don’t need any additives. A sign they’re ready for nutes is when the cotyledon leaves fade to yellow and die.

There are variables that determine the amount you feed, but sounds like you have a good starting point to me.

This are the rounder leafs not the sedated ones right

Yes the rounder ones.

I wanna thank you for your feedback btw it’s been very helpful I’ve been studying this more and more everyday I got a whole shedule that I’ve put to get her from days of studying so atleast I know I’m not going in lost I just over think stuf a lot

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I can tell by the pics you are watering too much.
Get a spray bottle and keep the soil moist. It should not compact, which is was pouring water will do.
That is probably why they look weak to you.
Environment and lighting should be suitable for a seedling as well. Low intense light at close distance is best. 75-85 degrees and 60-75% humidity is a good range. The ideal numbers are within that range.

I thought coco and perlite was no such thing as over watering cause the air to water ratio that it has idk maybe I read wrong I’ve been getting a lot of good info from cocoforcannabis.com great info for coco

I’ve been watering it every day just very little to get a little run off I figure that also give the roots air like as it run off

The climate is deff dialed in

78 degrees at 65 humidity

No runoff needed. The seedling stage should be treated differently than the veg stage. You should be nursing the little girl to develop a root system first. Small amount of water…moisture, not wetness. If that makes sense.
Sounds like you’re doing a good job, just let it dry out a little then start misting the coco. About 15-20 sprays once a day, sometimes twice.

I just read that once the cleyotede have been open for 24 hours and in its first container I should start to fertigate with a ppm no higher than 400 I mean that’s what I’m feeding my other four bigger autos that’s Are one week ahead plus they grew faster these are feminizes so should I start to follow my low ppm of 275 for the next Tyne I spray the coco/per which I don’t need run of for or should I follow my shedule and just Waugh’s the 2 weeks cause it’s sounds to me with what your telling me that I shouldn’t water it a lot to no move the roots around to let them grow and fill in the cup so every how many days should I water or fertigate in this solo cups

You would be ok to feed up to 400ppm, that not bad advise, but the idea of that is to have available nutrition at a concentration that won’t burn the roots and keep that concentration at a low amount then increasing the amount as the plant gets bigger. This can prevent deficiencies later on. It’s not completely necessary, but I can see the benefits when growing in coco.

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It’s tricky watering a young plant, so for a less complicated and more nurturing strategy, I suggest adding nothing for 10-14 days then transplant to 1 gallon pot and begin feeding at 400ppm.

one of them got a small hole on the serated leaf got me thinking maybe it needs calmag I mean I did buffer it with calmag at a pretty good strength mix maybe it’s nothing and rn I got the kingled 600w I don’t think it a strong like bought it for cheap i feel like it’s easier to use that then a bunch of bulbs do you think my light might be to strong for them I don’t have it that close

One week under 12/12 light cycle in a Red Solo Cup

Can you grow weed in a red solo cup? Can you skip the vegetative stage and go straight to the 12/12 light cycle? We have always wondered if this was possible, so we decided to try it ourselves.

In this video series, we document the process of planting seeds in red solo cups, and then putting them under 12/12 lighting.

In this episode, we review our seedlings after their first week in the flower room.

Growing Marijuana From Seed in a Red Solo Cup

For this experiment, we used regular seeds from Sin City Seeds, that included the strains Rainbows at Night, Hard Cider, and Cart Wheels.

We sprouted the seeds using the paper towel method. And once we had tails, we put them in a red solo cup with coco coir.

Using the 18/6 Light Cycle for young cannabis seedlings

In Part 1 and Part 2, our seedlings remained in our Veg Room under the typical 18/6 light schedule that is used during the vegetative stage. We kept them there for a total of 19 days, counting from the day the seeds were “planted.”

During that the first week, we filmed the seedlings at five days old. At that size, they were definitely not something you would want to flower. They were just a couple inches above the dirt.

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By the second week, we could have put them under 12/12, but at less than five inches, it just seemed like a good idea to get another week’s worth of growth at the 18/6 interval.

Our “12/12 From Seed” Experiment actually had 19 days under 18/6 light cycle

By the third week, our plants were a total of 19 days old and we decided to flower them at that point. They were about the size you would want if you were purchasing a clone from someone. By any standard, still very small plants.

So although we are calling our experiment “12/12 from Seed,” it is really “19 days of 18/6 then 12/12.”

Is this a true “12/12 from seed” experiment? Yes and No. It doesn’t really matter. You still get to see what a seedling is capable of, even with 19 days of vegetative lighting.

Flowering Cannabis in a Red Solo Cup

After one week of flower, the plants have definitely grown. (On second thought, maybe we didn’t need those 19 days under veg lighting after all?)

You can see that the plants have become noticeably bigger. And it’s only been one week under 12/12 lighting! The center nodes are priming to be flower sites. The fan leaves are large and drooping over, soaking up the light.

There’s been no pruning or defoliating on these plants. Not that any needs to be done. But the take away here so far is that it definitely looks like you can flower a plant in a red solo cup. The Agnetix LED lights are very powerful, so this should be an exciting run.

These plants are bigger than they were last week, and they look like they are ready to produce bud in the coming weeks.

In the next article, we will review the plants after conclusion of their second week under 12/12 lighting.

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