Some Copiapoa pics

[James Pickering]

Lovely plants James. They all look in fine condition.

Thanks, Rod.

[James Pickering]

These are just amazing plants, I'm green with envy! Thanks for posting.

Thanks @juster.

[James Pickering]

Thanks James. Not just green with envy, but glaucous green with envy!

Thanks Malcom.

[Torbjorn]

Perfect plants, very beautifull.
I have managed to "sunburn" several largish Copiapoa in the spring. It is hard to beleive this would happen in Sweden, and not in Arizona. I think you have mentioned growing under shade cloth? And maybe the temperature close to the glass in the greenhouse in my case is what is damaging?
Any growing tips to share?
Torbjörn

[James Pickering]

Here's one of mine in flower. Not quite as big as yours...

2018-07-27 14.11.18.jpg

Great flowering, Ralph!

[James Pickering]

Various cacti growing under 50% shade cloth

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Perfect plants, very beautifull.
I have managed to "sunburn" several largish Copiapoa in the spring. It is hard to beleive this would happen in Sweden, and not in Arizona. I think you have mentioned growing under shade cloth? And maybe the temperature close to the glass in the greenhouse in my case is what is damaging?
Any growing tips to share?
Torbjörn

Yes, Tobjorn, they are growing under 50% shade cloth. I started growing all of my cacti under shade cloth several years ago after following the discussions on several message boards that suggested doing so prevented the scorching that often occurs due to the lack of good air movement when growing them under glass. I don’t whether that is the entire answer, but it has worked well for me so far. My good friend, Don Vitko, and I share a large commercial greenhouse at the Cactus Nursery of Dan Bach (my other great friend) here in Tucson that he lets us use free of charge! Don and I collaborate a lot in growing cacti (mostly Brazilian and South American globular types) staged in containers on benches (tall columnar types on the ground) including quite oa lot of growing from seed. I mention all this because all of our plants there are growing under 50% shade cloth during the hot summer months - horticultural grade plastic added during the winter months.

I now grow just about all of my small growing Brazilian cacti at my town home under 30% shade cloth during the summer months and mostly in full sun during the winter months. Of course I can get away with that because of our climate. My plants do not scorch (or sunburn) under our fierce and unrelenting Arizona summer sun - even during our recent string of 110 F+ (44 C ?) plus days. That never ceases to amaze me!

[Bob Sobelman]

very-very nice

[DaveW]

It can be pretty windy at times in habitat in Chile Torbjorn, Paul Klaassen said he was nearly blown off his feet on one hillside and I experienced similar, but it's only a couple of periods during the day when the anabatic or katabatic winds flow up or down the hillsides.

https://bmtc.moodle.com.au/mod/book/vie ... terid=2273

You don't get the same air circulation under glass without quite a large fan, or removing a few greenhouse glasses in summer. Also the Camanchaca, which is wet mist off the sea, or really low cloud that rolls inland and covers many of the Copiapoa's during parts of the day. The plants only tend to grow in the areas the Camanchaca hits since there is virtually no regular rain in Northern Chile.

RMF picture of the Camanchaca rolling in.

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See:-

https://www.youtube.com/watch?v=yvHpvp9qSR4

You don't get daily fog like that in the greenhouse keeping the hot sun off the Copiapoa's, so shade cloth serves the same purpose.

http://www.copiapoa.dk/side_b_engelsk.html

[James Pickering]

Here are some recent pics of small growing Brazilian cacti staged on 30% shade cloth covered plant stands (except for those in the balcony box which are growing in full sun) at my town home. Please excuse the somewhat jumbled presentation - I am early on the learning curve of inserting pics in posts using my iPad.

Grouping of seedlings under 30% shade cloth

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Typical shade cloth covered plant stand

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Rooted cuttings and seedling plants in balcony box - full sun

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“Sit down” portable patio staging

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After a summer rainstorm

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