Propagating selenicereus grandiflorus

Multiplying your cacti vegetatively.
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capot1948
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Propagating selenicereus grandiflorus

Post by capot1948 »

I received 20 cuttings for selenicereus grandiflorus the other day. I'm currently letting them callus over a bit. Some questions I have before getting these going:

1) Each cutting is at least 12" long, would it be ok to cut these into 6" lengths and starting that way?
2) I plan on using some good potting soil with a lot of large perlite and maybe some orchid bark mixed in. Does that sound like a good mixture to use?
3) Once their potted and I'm waiting for them to root how much water do they need and how frequently and how much sun do they need to propagate? I live in Central Texas and have two greenhouses. One is in constant sun and even though it has a 60% shade cloth over the top this time of year the temp inside runs 100+ with low humidity. The other one is under a shade tree and the temps run at the most mid 90s with 50-75% humidity. Which would be the best place to put them? I'm guessing the shaded one as that's where I have my Epiphyllum cuttings growing.
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selenicereus grandiflorus cuttings I received the other day.
selenicereus grandiflorus cuttings I received the other day.
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snarfie
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Re: Propagating selenicereus grandiflorus

Post by snarfie »

Yes you can cut them in half, that's about the size of my cuttings. I have them outside here in the netherlands, and they tolerate high temperatures.
Young professional amateur in Schlumbergera and Rhipsalidopsis growing and hybridizing
capot1948
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Re: Propagating selenicereus grandiflorus

Post by capot1948 »

Thank you, I managed to turn the 20 into 42 and currently have them just sitting in my garden cart by my shaded greenhouse. I gave them a small drink yesterday, didn't douse them. Do they need to be in the shade such as my orchids are where the temps are around 95 with 50-75% humidity or do they need to be in the sun? I doubt they'd do very well in my other greenhouse which is in the full sun and even with shade cloth reaches 100+ with low humidity.
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snarfie
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Re: Propagating selenicereus grandiflorus

Post by snarfie »

I don't know how much sun they will get there, but here they can handle sun very well. Mine are a bit sunburned, but that's because i didn't want to go through the whole process of putting it outside and inside to gradually get used to the sun.
Young professional amateur in Schlumbergera and Rhipsalidopsis growing and hybridizing
capot1948
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Re: Propagating selenicereus grandiflorus

Post by capot1948 »

They're in shade all day in that spot. Now I'm not sure if I should put them in the greenhouse with sun, 100+ temps and low humidity or the one in the shade with highs around 95 and high humidity.
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snarfie
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Re: Propagating selenicereus grandiflorus

Post by snarfie »

A shaded spot is good for rooting
Young professional amateur in Schlumbergera and Rhipsalidopsis growing and hybridizing
capot1948
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Re: Propagating selenicereus grandiflorus

Post by capot1948 »

My apologies, I've got them all in my shaded greenhouse where the temp was 94 and the humidity was 55% in the heat of the afternoon. I think that should be good enough shouldn't it? My Epiphyllum cuttings sure do love it in there.
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snarfie
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Re: Propagating selenicereus grandiflorus

Post by snarfie »

Selenicereus also is an epiphytic cactus, so it'll probably do well in your greenhouse if the epiphyllum do well.
Young professional amateur in Schlumbergera and Rhipsalidopsis growing and hybridizing
capot1948
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Re: Propagating selenicereus grandiflorus

Post by capot1948 »

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They're doing really well in this one as you can see.
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capot1948
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Re: Propagating selenicereus grandiflorus

Post by capot1948 »

I moved some of my cuttings that were putting out good growth to some 3" pots a week or so ago. New growth seems to have take off after I did that. As you can see in the photo some are getting rather large. Should I think about these to bigger pots? Any other suggestions on what I should be doing?
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My Selenicereus cuttings at 1 1/2 months old
My Selenicereus cuttings at 1 1/2 months old
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