First Pterocactus

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RAYWOODBRIDGE
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First Pterocactus

Post by RAYWOODBRIDGE » Wed May 12, 2021 9:28 pm

Nearly all of my Pterocactus have buds on, but seem reluctant to open.
But this one made the effort today.
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Re: First Pterocactus

Post by Mike P » Wed May 12, 2021 9:41 pm

Same with mine although I noticed an australis was almost open today.
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Re: First Pterocactus

Post by ralphrmartin » Sun May 16, 2021 7:22 pm

I've had a few flowers on my reticulatus, but unlike last year's complete ring, this year they are opening 2 or 3 at a time in succession.
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Re: First Pterocactus

Post by RAYWOODBRIDGE » Sun May 16, 2021 11:25 pm

Now they are all starting
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Re: First Pterocactus

Post by Tony R » Tue May 18, 2021 11:12 am

Here are some of my pterocacti this morning, lots of buds but not many flowers yet.....

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Re: First Pterocactus

Post by Christian » Tue May 18, 2021 11:26 am

It‘s interesting to see you are growing some of these with their tubers exposed. What is your reason for doing this, Tony?
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Re: First Pterocactus

Post by Tony R » Tue May 18, 2021 11:59 am

Christian wrote:
Tue May 18, 2021 11:26 am
It‘s interesting to see you are growing some of these with their tubers exposed. What is your reason for doing this, Tony?
Two reasons, Christian.
1. I cut all the top growth off most of them in Autumn 2019 when I last repotted them and wanted the tubers to heal above ground that winter before the new growth dramatically started in spring 2020.
2. If the tubers are totally sunk they tend to grow more quickly. I am happy that such plants in 5 inch pots are big enough for me.
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Re: First Pterocactus

Post by Christian » Tue May 18, 2021 5:42 pm

Thanks, Tony, that makes sense. Looks like a good way to restrict the size of the plants - though I expect you‘ll need to be careful to keep the tubers sufficiently shaded in the summer.
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Re: First Pterocactus

Post by ralphrmartin » Tue May 18, 2021 5:49 pm

Until I read "5 inch pots" I was going to ask if you thought the pots were big enough for their tubers. Most of them look more like 3" pots.
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Re: First Pterocactus

Post by Tony R » Tue May 18, 2021 6:45 pm

ralphrmartin wrote:
Tue May 18, 2021 5:49 pm
Until I read "5 inch pots" I was going to ask if you thought the pots were big enough for their tubers. Most of them look more like 3" pots.
Indeed they do, Ralph, photos of pots & trays (never mind plants) can be deceptive in the eyes of a viewer, without a measure. Most of the plants in this 20" tray are in Optipot 12F pots, taken on a sunny/shady evening after a recent thunderstorm.

IMG_1616 with measure resize.jpg
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(Gasteria, Mammillaria, small Opuntia, Cleistocactus and Sempervivum are my current special interests)
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