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#1 scott_1971_h



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Posted 30 June 2021 - 07:04 AM

Rummaging around the bottom of my seed drawer, I discovered a pack of 100 'Trichocereus hybrid' seeds. Trichocereus pachanoi x peruvianus, or so it says. No idea where they came from.

I'm thinking they might be good for something, I'll just pop them in cactus mix in a few months when it starts warming up.

What temps do they need to germinate? I'm supposing the mix can be a little more like normal mix, not quite as airy, as they are from semi arid areas (as opposed to fully arid) but they will respond to wet feet like any good cactus, and drop dead...

#2 Skywatcher


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Posted 30 June 2021 - 08:53 AM

Hey scott_

Cactus seeds are actually pretty simple, within a specific set of conditions. You need a well draining and organically poor soil, sandy is good with no bark or peat. Sterilize it in the microwave before use.

Seeds get sown on the surface, not buried.

Sow the seeds on well saturated soil mix, and keep in near full humidity of 85-95%.

Keep the temps between 75-90F, 85F is a good mid point, but day to night fluctuation is helpful.

No direct sunlight, but bright light is needed. I personally like fluorescent.


Seeds can start to pop in as few as 3 days, but a week to two weeks is more common. Some can dally as long as a month.


You will want to keep them in the high humidity for a few months before you try to harden them off to the ambient humidity level.


Enjoy the venture and good luck............................

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