Austrocylindropuntia pachypus

For the discussion of topics related to the conservation, cultivation, propagation and exhibition of cacti & other succulents.
Forum rules
For the discussion of topics related to the conservation, cultivation, propagation and exhibition of cacti & other succulents only.

Please respect all forum members opinions and if you can't make a civil reply, don't reply!
Post Reply
User avatar
Ali Baba
BCSS Member
Posts: 1673
Joined: 26 Dec 2007
Branch: DERBY
Country: UK
Role within the BCSS: Member

Austrocylindropuntia pachypus

Post by Ali Baba » Sat Dec 01, 2018 8:53 pm

I have 3 plants of this species which are all the same clone and between 7 and 8 years old. The biggest two are now 50cm tall. Two have single stems and one has a single side branch a couple of years old. No flowers yet. Anyone with a flowering plant who can tell me when I might expect flowers?
RICHAUD
BCSS Member
Posts: 917
Joined: 26 Jan 2011
Branch: None
Country: france

Re: Austrocylindropuntia pachypus

Post by RICHAUD » Sat Dec 01, 2018 10:31 pm

at 50 cm you have big pachypus: in nature the plants that I saw with Brian Bates were smaller
I think the main problem is that we do not suffer enough pachypus in our latitudes and incidentally the lack of brightness
topsy
BCSS Trustee
Posts: 670
Joined: 20 Sep 2007

Re: Austrocylindropuntia pachypus

Post by topsy » Sun Dec 02, 2018 10:26 am

Hi,

Your plant is definitely big enough and I would say that if the side shoot was high up on the plant, that it has probably tried to flower from there. They definitely flower at this time of the year and put on some growth, but our poor light levels mean that any buds which are forming are not encouraged to progress all the way very often. Don't forget that this plant produces its flowers in chains, so I would expect any new buds come come from the shoot rather than the main stem.

Suzanne
User avatar
Tony R
Moderator
Posts: 2514
Joined: 20 Apr 2009
Branch: DARTFORD
Country: UK
Role within the BCSS: Branch Chair
Location: Hartley, LONGFIELD, Kent

Re: Austrocylindropuntia pachypus

Post by Tony R » Sun Dec 02, 2018 11:30 am

Hi Alan,

I concur with Suzanne but let me also share my experiences with this species from here in (sometimes) sunny Kent.

My largest plant first flowered in Nov 2011/Jan 2012 when it was about 35cm tall and about 8 years old. I water this species from June until end November and most years new buds or sometimes segments begin to appear during August.
1. pachypus Nov 2011.jpg
The first time it flowered, November 2011, the autumn light was poor and the flowers just sat there unopened until one opened on a sunny day in January 2012.
2. pachypus Jan 2012.jpg
Some years the flower opens in November if it is a good autumn as in Nov 2015.
3. pachypus Nov 2015.jpg
I remove the floral remains (empty fruits) each spring and root them down to propagate new plants. Here are the two fruits from January 2012 with five new segments.
4. pachypus ex Jan 2012 flowers in Nov 15.jpg
To complete the picture here are the plants today. The main plant grew a segment last year and barely started producing a segment or flower this year. Time for a re-pot to reinvigorate it.
5. top of pachypus 2Dec2018 small.jpg
And these are my current propagations from earlier years' flowers. You can see one of these had flowered this autumn. I remove the segments every other year to root down separately and more segments will grow the next year. I remember at this year's TSG Annual Meeting such plantlets were among the first to leave my sales table!
6. pachypus propagations 2Dec2018 small.jpg
A very rewarding species, one of my (many) favourites!
Tony Roberts
Chairman, BCSS Dartford Branch
Treasurer, Haworthia Society
Chairman, Tephrocactus Study Group
Moderator, BCSS Forum
Kent
(Gasteria, Mammillaria, small Opuntia, Cleistocactus and Sempervivum are my current special interests)
ragamala
BCSS Member
Posts: 341
Joined: 28 Feb 2016
Branch: NORTH FYLDE
Country: UK

Re: Austrocylindropuntia pachypus

Post by ragamala » Sun Dec 02, 2018 11:37 am

Lovely pictures of the flower Tony, Brilliant.
User avatar
juster
BCSS Member
Posts: 564
Joined: 17 Sep 2013
Branch: CROYDON
Country: UK
Role within the BCSS: Branch Show
Location: Surrey

Re: Austrocylindropuntia pachypus

Post by juster » Sun Dec 02, 2018 12:21 pm

Very interesting Tony, and a simply beautiful flower, I don't think I've ever seen one in flower before. Thanks!
Croydon Branch member, growing mainly cacti and Echeverias
User avatar
Ali Baba
BCSS Member
Posts: 1673
Joined: 26 Dec 2007
Branch: DERBY
Country: UK
Role within the BCSS: Member

Re: Austrocylindropuntia pachypus

Post by Ali Baba » Sun Dec 02, 2018 1:32 pm

Thanks Suzanne and Tony. I wonder if propations from flowering stems start flowering younger. Mine start into growth around August, although I find I have to give them a bit of water in early summer to keep them upright. I have left the side shoot on and it continues to grow. Perhaps it is just down to light levels, although my greenhouse is essentially unshaded all year I guess it isn’t as sunny here as Kent!
Attachments
IMG_2165.JPG
IMG_2163.JPG
Last edited by Ali Baba on Sun Dec 02, 2018 2:16 pm, edited 2 times in total.
User avatar
Tony R
Moderator
Posts: 2514
Joined: 20 Apr 2009
Branch: DARTFORD
Country: UK
Role within the BCSS: Branch Chair
Location: Hartley, LONGFIELD, Kent

Re: Austrocylindropuntia pachypus

Post by Tony R » Sun Dec 02, 2018 1:53 pm

Very nice plants though, Alan.
I would put them in bigger pots next year. I always find with columnar plants they will take more root room without fear of overwatering.
Tony Roberts
Chairman, BCSS Dartford Branch
Treasurer, Haworthia Society
Chairman, Tephrocactus Study Group
Moderator, BCSS Forum
Kent
(Gasteria, Mammillaria, small Opuntia, Cleistocactus and Sempervivum are my current special interests)
User avatar
D^L
BCSS Member
Posts: 181
Joined: 23 Sep 2010
Branch: BRISTOL
Country: UK

Re: Austrocylindropuntia pachypus

Post by D^L » Sun Dec 02, 2018 2:15 pm

I don't remember what height mine was when it first started flowering, but it was higher than 0.5m, perhaps 0.7m. Might just have been poor cultivation on my part or it may be that different clones need to be bigger to flower.
Cheers
David Lambie
User avatar
Ali Baba
BCSS Member
Posts: 1673
Joined: 26 Dec 2007
Branch: DERBY
Country: UK
Role within the BCSS: Member

Re: Austrocylindropuntia pachypus

Post by Ali Baba » Sun Dec 02, 2018 2:17 pm

Thanks, they will certainly need repotting next summer as they have a dangerous tendency to lean when they get dry :shock:
Post Reply