I had miserable luck with cuttings in potting soil but am doing better with water. I put them in clear plastic cups of water and watch to see when roots appear, then add a teaspoon of potting mix a day. When it's the consistency of mud, I remove from the cup (or cut the cup). I can not claim great success beyond this, but at least I have graduated to this stage! Flora, I would like to know if potting mix that has developed algae on the surface can be reused without being sterilized, either in the sun or microwave?

Thank you, floral! I'm wondering if it's been so humid here lately that it's making it way too humid in the greenhouse. Houston feels tropical most of the year, so maybe I should have left the bag untied like in the picture? It stays tied most of the day and I know it gets pretty toasty in there. The ones in are all going to die I'm sure. I will definitely have to try again.

Kitasei, I've never heard of doing it that way, but that sounds interesting. I got tired of my cuttings dying so I did also attempt just water. Cuttings dipped in rooting hormone and put in water by my windowsill. I currently have two mint cuttings by the window. Sigh... Guess I'll have to wait and see.

Also, I forgot to mention that those are blueberry cuttings. Not sure of the variety.

I would not recommend using water. Many plants won't root in water anyway and the roots formed in water are of a different nature from roots in soil and they don't transfer well. You need an open medium which drains well.

I don't really know what potting mix is since we don't have anything called that here.

I have some mint in water and the only reason I did it that way is because the lady that gave me my current mint plant, got it to root that way. My mint plant is in a pot and it's gotten very dense. I didn't want to prune and toss, so I'm attempting water. Lol.

Potting mix is basically a mixup of peat, compost, sand, perlite, fertilizer, and whatever else.

UPDATE: I tossed the cuttings from the pictures I posted. I tossed everything and I started over with only 1 blueberry cutting (from a purchased blueberry bush). I'm only doing 1 because it makes me sad to see them die. Also, here in Houston, TX, it's been rainy and VERY humid, so I cut more openings in the cover of the greenhouse so they can better ventilate when covered up. I pretty much just want to experiment with it. I'm not trying to sell or anything. I'm so fascinated by propagation!

Fingers crossed!

I usually try to root new things in groups of 5 or 10, just so that I can get an easy percentage idea of how many are rooting. I used to do a few per pot, because I would transplant the entire pot, but now I've gotten more accustomed to packing in a lot more for rooting because I can transplant just individual rooted plants.

Looks like the water in the bin may not be drying fast enough, rotting the cuttings. This can easily happen in any kind of bin, I have done it also. I find that having the cuttings in their own pots in a water bin/tray is easier to keep at the right wetness. If i add too much water i can take my cuttings out and drain the tub. Check it out in this video. Good luck!

UPDATE:

Thanks guys! I will have to try individual pots since my SECOND attempt failed again. Definitely too much moisture. For the past two weeks or so, we have gotten a lot of rain (Houston, TX). I did move them to somewhere where they wouldn't get rained on (water could come through the slits I made in the plastic bag covering of my ghetto greenhouse) and they still died. Within two days all them cuttings turned brown.

I want to scream!

My poor blueberry bush :( Individual pots next time and California Garden Guy, I'll also make the same sound effects when jamming the cutting in the soil. Uuhhhh!!! Lol

I did some blueberries last year in clear cups with 100% perlite only, put some holes in the bottom of the cup and put in a clear large tote with a closed lid with water in the bottom, mist the leaves with water couple time a day and leave in the shade. It work pretty well for the cost and little effort.

Some of my raspberries did really well but some didn't. Blueberries about 50% lived but I didn't have any live when I mixed the perlite with peat moss or soil but I got a lot to learn myself. I'm going to try again this year at the end of June when I have some more new growth on the blueberries.

Bless your heart, it can be so discouraging. I'd like to suggest that you wait till later in the year. Right now, Houston is leading the way to Summer (along with us in Central Texas). All the sap has extended to the tips of the stems to make leaves. Wait till after the temps start dropping - close to what you would consider your first frost. That is when all the sap has returned to the roots, leaves usually drop by then... except you are in Houston where you won't notice leaf drop as much as we would here. Then, try your cuttings to see if you have better success. Here's hoping!

Thank you guys for your input. Here in Houston it's been so hot (high 90s feeling like over 100°). About a month ago, it rained for weeks. My cuttings did not do well with tons of moisture and then a quick change to a lot of heat.

I think I'll wait till fall when it's cooler before I attempt any new cuttings. I think I've tortured my blueberry bush enough!