Does The Amount Of WATER Change Propagation? 

I started putting a thin layer of pebbles in my water prop jars purely as an aesthetic reason. To my surprise I noticed rooting seemed to happen faster and the roots were thicker than I'm used to seeing.

I was happy to see you weigh the cuttings to start. I was hoping you would weigh the end results. That way, we can see the total growth of roots and new foliage. I really like being able to see data, because my eyes play tricks on me.😊

im guessing the next experiment will be jars with the same volume capacity but varry in height. The amount of plants also seemed to make a small difference too, that crammed jar had the beginnings of the secondary roots and i didnt see that with the other jars

the root thickness difference is interesting 🤔

Tiny, tiny jars is what I plan to use then! I'm currently using sphagnum moss and perlite, and they are in shallow vessels. Thanks for doing all the work. I really enjoy your videos!

The roots in smaller containers with less water, look like 'root-bound' roots. I'd like to see what happens if you take those same cuttings and put them into a large container of water, as though you were re-potting them, so to speak.

Should consider the air saturation of the water, it has a correlation between the volume and surface area, thanks for the video

It would be a very interesting experiment to put the cuttings in 1) reverse osmosis water 2) 'normal' water 3) water with diluted fertilizer solution 4) normal fertilizer solution!

After watching this video I changed my neon and marble queen props to shorter vessels. Time will tell if I get thicker/stronger roots. Thanks for sharing your results.

That was an interesting experiment! I propagate into water a lot and I never thought about the amount of water making a difference. I usually use pretty small jars for my propagations, so that makes sense why my plant's roots get thick. Your experiments are awesome! Keep it up!

An experiment I'd like to see is soil mixes effect on growth. Lots of people shove perlite into everything, but TBH I hate perlite. It floats, it's messy, it creates dust and I feel like all it does it make my plants dry out. I think it's trying to fix a problem (overwatering) that I don't have.

It might be interesting to try something like this but with another cutting species, not an aroid, placed in with the pothos… just to see how the hormones affect the the rooting quality of other plants. Things that people commonly root in water, like Hoyas, Coleus, lipstick plants, pileas, peperomias, etc. I’ve noticed that the thinner-leaved, less-succulent types of Peperomia, like 'Frost', 'Rosso' or 'Piccolo Banda', root in water quite quickly from just leaves, with some petiole attached. I’ve put several 'Frost' leaves in a tall water bottle, and they rooted very quickly, and even developed baby plants underwater. But I wonder if pothos would make it even faster.

I get so excited for your experiments!

The way to really measure growth rate would be to weigh the cuttings each time and that'll be more telling of growth than measuring the length of the roots. IME, what makes the biggest difference in the speed of root development is how high up your cutting was on the plant. The apex (top bud) will have a higher content of endemic growth hormones in it and it'll root and grow faster than the one below and so on and so forth. Only the bottom cut has an advantage because it already has an established root system, so it'll grow and mature faster than the mid cuttings. That may be besides the point but water propagation is not a good practice, pros never use it because we know it's not efficient and it makes your cuttings vulnerable to root rot (most plants are not adapted to grow in water, so it just stresses them out, they'll grow slowly and become weaker. Furthermore, water-adapted roots have a higher risk of rotting once you transplant into soil which then stresses your plant even more). There is literally no good reason to be doing it. Pothos are tough as nails, so they can still handle it but any terrestrial plant will root and grow faster in soil. Setting up a propagation bin is not that expensive and yields much healthier plants at a faster rate. True hydroponics are a different animal than a glass of still water because yeah, hydroponics will get you faster growth but you have to optimize a couple of things to get there and not all plants will react well to it.

I had actually been assuming that when I saw lower water levels appearing to have more root growth was just an optical illusion caused by the roots clumping up closer together, but the theory about the bottom of the jar encouraging them to get bigger is interesting. There are a couple of different future experiments that could be done here, I think.

What i recommend is maybe getting a large bucket or bin and then putting all the cuttings into it on some sort of stair construction. You would need something like a board with holes in it to hang all the cuttings from the same height and then just make the roots hit the stairs at different heights.

I was just negotiating with a Cannababy cutting. It did not want to grow roots because it claimed it was in too much water. So I drained it a bit. But some plants are just "smart" as a rock...

I think more water = more Oxygen in the water Maybe an Experiment with an Aquarium Air bubble thingi?` I have an big Alocasia Dragon Scale in a 2Liter Jar and an Air Bubbler , its goin crazy

I haven’t found anything faster to propagate my cuttings then putting it in my freshwater aquarium. Twice as fast as it used to be with many more roots. I was shocked how fast it worked. Such an interesting hobby although I am pretty new at it

The root thickness difference is interesting. The cuttings in less water also developed secondary roots 🤔🇨🇦

I think more oxygen in the fuller one helped initially… I usually start as low as possible and keep adding more water each week for oxygen.

I wonder if the leaves being crammed down into the jar, vs being on top of the jar, impacts growth. From previous tests, I believe that it may be that when leaves are able to photosynthesize, the propagation is more able to focus on root growth, whereas when the leaves are non-existent or not able to access as much light, the cutting focuses some of the energy on new foliage growth, which stunts early root development. Hmmm, may I should test this, instead of letting you have all the fun. I love your content, particularly your experimental approach. You've given me more confidence in taking risks, which has improved my skill at plant care.

Now I'm wondering if restricting the roots with LECA, or even wrapping a wad of paper towel, or newsprint around them would thicken roots.

Have you ever done one that compares water types. I have all my propagation jars with rain water and some rooting in my fish tank. It would be cool to see tap water vs rain water vs fish tank water

This seems like a significant discovery, to put it lightly. Unless someone else has already covered it. It seems like we could use this knowledge to create even stronger trees or something.

Good stuff. Have you done an experiment with changing out the water or leaving it? Or rooting another plant with a pothos added or without one?

New experiment! Do nodes that are closer to the roots vs farther from the roots of the mother plant root at different rates?

are the plants in the biggest jar closer to the light source? wouldnt that influence the results?

Did you keep them outdoors or indoors? Wondering if an air bubbler in each jar would help with oxygen exposure?

Wow! Just like the old days 🙏

What kind of water and or conditioners you use. I bought a little one leaf monsters. I didn’t realize it takes so long to grow

I mean it makes sense, the plant will seek water if there isn't any

What type of water did you use for the experiment here? Smaller pots of water will have less overall trace minerals/nutrients that will deplete faster. Was that variable accounted for?

Which jar had the top cutting?

I feel like hobby lobby would have the containers your looking for that or something like jeffery Allan's. Cheap ass glass cylinder, but it holds water. Love the video thank youuu

interesting!!!

Big Pokémon trainer energy today (/pos)

I would think that the larger water volume would have more minerals available for plant growth.

Wondering if water composition matters like adding some hydrogen peroxide

I think this opened a window for another experiment.

Interesting experiment, and interesting results. Keep experimenting! 🪴

Should've labelled the jars no. 1 to 6 instead of using "massive" "half filled" "previous"

The bigger jar is gonna have longer roots because there’s room for them to grow long. Should try two jars same size, different water levels. I think dark glass roots better also. 💚🫶🏼