Growing Opuntia

Use this forum to discuss matters relating to Cacti genera too plentiful to enumerate. This is where one posts unknown plant photos for ID help.

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Jkwinston
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Growing Opuntia

#1

Post by Jkwinston »

[attachment=0]Prickly Pear Fruits-0.jpg[/attachment

Hey guys, it is years since I have tried growing Opuntia seeds, as I always maintain it was not worth it. I remember some taking a full year to germinate. But I am willing to try again with some O santa rita seeds. Any ideas ? Jkw
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Samhain
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Re: Growing Opuntia

#2

Post by Samhain »

I’ve only tried the local basilaris and they had no complaints. Propagation by cutting looks to shave about 15 years off the process though.
15F-110F. 14” annual rainfall. 8b. 3000’
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Tom in Tucson
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Re: Growing Opuntia

#3

Post by Tom in Tucson »

Jkwinston wrote: Fri Mar 24, 2023 4:22 am [attachment=0]Prickly Pear Fruits-0.jpg[/attachment

Hey guys, it is years since I have tried growing Opuntia seeds, as I always maintain it was not worth it. I remember some taking a full year to germinate. But I am willing to try again with some O santa rita seeds. Any ideas ? Jkw
3 steps I would take:

Rinse off all the pulp and dry the separated seeds in the sun
Store the seed in a cool and dry location for 1 year or longer
Start the seed in a closed baggie in 100% inorganic soil at 90-100F
Casas Adobes, AZ
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mickthecactus
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Re: Growing Opuntia

#4

Post by mickthecactus »

That’s a high temperature Tom. I was once told you need even higher bursts of temperature for Echinocactus horizonthalonius.
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Jkwinston
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Re: Growing Opuntia

#5

Post by Jkwinston »

Tom in Tucson wrote: Fri Mar 24, 2023 12:49 pm
Jkwinston wrote: Fri Mar 24, 2023 4:22 am [attachment=0]Prickly Pear Fruits-0.jpg[/attachment

Hey guys, it is years since I have tried growing Opuntia seeds, as I always maintain it was not worth it. I remember some taking a full year to germinate. But I am willing to try again with some O santa rita seeds. Any ideas ? Jkw
3 steps I would take:

Rinse off all the pulp and dry the separated seeds in the sun
Store the seed in a cool and dry location for 1 year or longer
Start the seed in a closed baggie in 100% inorganic soil at 90-100F
Tom, it sounds like a lot of hard work, and just what I was trying to avoid. Over here the pads are not easy to get, and that is why I thought I will try the seeds. But I will dare myself to experiment, and come up with some other ways of starting the seeds out, and trigger earlier germination. Jkw
Andrew in Germany
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Re: Growing Opuntia

#6

Post by Andrew in Germany »

I have had a lot of success with germinating prickly pear seeds. To the point of them becoming a weed. After eating bags of fruit in the fall, I decided to try and germinate my own plants. Here are my methods.
1. Wash the fruit off the seeds and soak them for a few days in water. Plant them into pots of free draining seed soil when ever you get to it, water it well then let it dry out for a while, a couple of weeks while you do other things around the garden. Then put the pots into a deep tray of water, let them soak it up and suddenly I had a huge number germinating. They kept germinating, weeks later new ones popping up. Plant up into bigger pots with lots of root run and they grow very quickly.
2. I threw the skins and remains of the fruit onto the compost pile. The resulting compost used for other plants brought countless seedlings of opuntias, which I just threw away! Weeds.
I now have pots of prickly pears from differing colored fruits. All the plants are only a few months old but are large and growing very strongly. They don’t need any special treatment in my experience. Give a good pot with space to grow and they’ll take off.
They are probably not winter hardy for me, but I have so many that trials won’t hurt.
Hope this inspires you to give it a try…
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Jkwinston
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Re: Growing Opuntia

#7

Post by Jkwinston »

Thank you Andrew. Your response suggests that they need much more exposure to water than I have given them before. I will try giving my current lot a lot more water, and see how that works. I have three pots with seeds,which I am treating as an experiment. As I said, the pads is to me the best option. But will see how it goes. Jkw
Andrew in Germany
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Re: Growing Opuntia

#8

Post by Andrew in Germany »

I found that sitting the pots in water for a day or 2 inspired the seeds more than watering from the top down. Good luck!
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meridannight
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Re: Growing Opuntia

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Post by meridannight »

I have been able to germinate Santa Rita from fresh seeds, but the germination rate was poor. I only got 1 seeding per 30 seeds. I currently have 2 plants growing -- at least they're doing well -- though they are not fast growers for me by any means.

I still have about 50 seeds left that I have been sitting on for 10 months now. Will see if I get a better rate with these older seeds.

I also currently don't have access to pads. I could order them off the internet, but that's gonna be more expensive for me than to chance it with seeds. And since I love growing plants from seed, I went with this. If I ever have the opportunity to get my hands on pads, I'll sure take it.
Species I'm growing from seed: Agave nizandensis, Agave difformis, Agave parryi, Aloe alooides, Aloe manandonae, Aloe dhufarensis, Aloe barbara-jeppeae, Hyophorbe verschaffeltii, Kerriodoxa elegans, Johannesteijsmannia altifrons, Chrysalidocarpus leptocheilos, Licuala grandis, Pachypodium lamerei
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