Edwin Dwianto

[Edwindwianto]

Hi Guys

These cacti has just came yesterday into my collections

Ariocarpus retusus

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Ariocarpus scaphirostris - the top growth may not look like much, butit has large double tap root (human legs like). I have never seen such root before and i'am happy to have it in my collections as a prove that such thing exists (sadly, i forgot to take a picture, next re-potting time, i'll take a picture)

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And since i ran out of space, i also expand my tray. This is how my roof-top cacti collections looks like now...

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EDWIN

[Shane]

Nice addition. You have a small but good cactus collection

[Edwindwianto]

Nice addition. You have a small but good cactus collection

Thanks Shane
Yours too are a good collections

[Edwindwianto]

Hi everyone,
Just bought this cactus...
The seller said it is 9yo...idk if it's true or not...

Wow...is that a tap root?
I have never known that A. hintonii had a tap root...

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I start at 1.3cms...
Let's see how slow it grows...

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Done...
I pot it in my regular mix
I haven't been able to find gypsum rock...had i found some, i would have tried it for this baby

rsz_20200226_121206.jpg (68.84 KiB) Viewed 9504 times

EDWIN

[DaveW]

Could well be that age Edwin. David Quail grows a lot of these in the UK and you can see the age of his seedlings in the "Fig" links at the bottom of this:-

https://www.living-rocks.com/quail2.htm

I grew my own from seed, but cannot remember how long ago now. They flower reasonably small when they produce the spines at the crown and loose most of that wool on the areoles. It was the only one that germinated and since the seed is dust like I was surprised I reared it. Though I understand they are not as difficult from seed as A. ritteri? Mine is just growing in my normal cactus mix, no gypsum or anything special.

Aztekium hintonii, plant about 2" (5cm) diameter.

hintonii.jpg (84.63 KiB) Viewed 9471 times

https://www.cactus-art.biz/schede/AZTEK ... ntonii.htm

https://www.cactiguide.com/forum/viewtopic.php?t=2596

They seem to produce that curious flocking at the base rather like an Astrophytum at first, but also tend to loose that later too.

[Edwindwianto]

They seem to produce that curious flocking at the base rather like an Astrophytum at first, but also tend to loose that later too.

Dear Sir
Thanks for all the explanations
I always learn a thing or two when i speak to you

Wow...that is a nice looking hintonii you've got there Sir
Do you see any tap-root on yours, Sir?
Do you know, is it self-fertile or self-sterile?
Sir, what is that discoloration on your hintonii (white-brown stripes across the body)?, can we avoid it (or is it natural, just like orange discoloration on O. macdougallii, there is nothing we can do)?

HAHAHA, had i found some gypsum Sir, i would have tried it...hahaha
For my experiment Sir, as always...

BTW...what is a flocking?

Sir, you can see in this link, those giant hintonii don't loose their areole's wool and in my opinion, they look just like a bigger version of mine...and i can see that yours is trully different (with the spiny crown and all)...are they of different cultivar?

Thanks
EDWIN

[DaveW]

Dave will do Edwin, I have not yet been Knighted and given the British title Sir!

The white brown stripes are flocking (= tiny hairy patches, flock = a small tuft of wool) just like the white spotting or flocking you get on Astrophytum's similar to the white woolly stripes on this Astrophytum ornatum:-

https://www.gardenersworld.com/plants/a ... m-ornatum/

The stripes are natural, but seem to be a juvenile stage with some hintonii which not all produce, though some have a similar brownish strip at the base of the ribs for a time. All cactus species are variable and what you describe is simply natural variation that may occur within a single population, let alone different populations. All humans are the same species, but individuals look different to each other. Unfortunately we get used to single artificially raised clones in cultivation and think they are typical of the population in the wild.

Those Aztekium hintonii in your link Edwin are still juveniles and do not look anything like mature plants in habitat. Are they grafted since they don't usually offset that early on their own roots?.

http://cactushabitat.com/Mexico/NuevoLe ... onii3.html

https://www.flickr.com/photos/art-monad/3289241706

Also in habitat wool gets weathered off and spines in some species (Matucana madisoniorum for instance) can be fugacious (= soon falling off, or tending to disappear, fleeting)

I did not notice the roots and have not noticed any fruit, so maybe they are self sterile as I do not have another to cross with.

[Edwindwianto]

Dave will do Edwin, I have not yet been Knighted and given the British title Sir!

OK Dave
I just don't feel it is appropriate to call you by name, since you could be my father

The white brown stripes are flocking (= tiny hairy patches, flock = a small tuft of wool) just like the white spotting or flocking you get on Astrophytum's similar to the white woolly stripes on this Astrophytum ornatum:-

https://www.gardenersworld.com/plants/a ... m-ornatum/

The stripes are natural, but seem to be a juvenile stage with some hintonii which not all produce, though some have a similar brownish strip at the base of the ribs for a time. All cactus species are variable and what you describe is simply natural variation that may occur within a single population, let alone different populations. All humans are the same species, but individuals look different to each other. Unfortunately we get used to single artificially raised clones in cultivation and think they are typical of the population in the wild.

Those Aztekium hintonii in your link Edwin are still juveniles and do not look anything like mature plants in habitat. Are they grafted since they don't usually offset that early on their own roots?.

http://cactushabitat.com/Mexico/NuevoLe ... onii3.html

https://www.flickr.com/photos/art-monad/3289241706

Also in habitat wool gets weathered off and spines in some species (Matucana madisoniorum for instance) can be fugacious (= soon falling off, or tending to disappear, fleeting)

Yes Dave, they are all grafted
But as you can see my thumb in the pict, you could see that they are very big indeed
And i thought they were of flowering size...haha

I did not notice the roots and have not noticed any fruit, so maybe they are self sterile as I do not have another to cross with.

Ah OK...that is disappointing

Thanks Dave for all the infos

EDWIN

[Edwindwianto]

Hi everyone
These photos have been taken in a course of 1 month to understand the growth speed of O. macdougallii in these months, in tropical area (Bangkok, Thailand). I tried to take them from the same angle everytime.

Enjoy

Growing condition
1) grown in my standard mix
2) watered once a week with unacidified tap water
3) put under full sun until 10AM, then moved into shaded area
4) fed with osmocote
5) it has been in my care since Jan15th 2020

Conclusion
1) One tubercle needs one month to form (start Jan30th, finish Feb28)
2) A new tubercle is formed every 20 days-ish (jan 30th and feb20th)
3) I don't think that it is a slow grower. What do you think?

Observation
I see that not all areoles have central spine, but this particular new areole has
In total, it has 6 radial spines and 1 central spine

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02 - Feb4th 2020.jpg (72.11 KiB) Viewed 9386 times

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05 - Feb16th 2020.jpg (70.86 KiB) Viewed 9386 times

A new other tubercle is formed

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08 - Feb28th 2020.jpg (76.13 KiB) Viewed 9386 times

The closeup of the new fully developed tubercle and areole

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EDWIN

[DaveW]

You asked about the flocking stripes on my Aztekium hintonii Edwin. This video also shows one with similar flocking lines towards the top, therefore mine is not unique in that respect. They often seem to appear and disappear randomly on the body.

https://www.youtube.com/watch?v=rLrRk4S0BvE

Hers is larger than mine, but mine has flowered for a couple of years. It starts to flower when it produces the wool and spines at the crown as mine has. You can see the dead flowers on mine too, but I have not noticed any seed pods therefore it may be self sterile. David Quail she mentions raises them from his own seed in the UK but then he has many of them flowering together now.

[Edwindwianto]

https://www.youtube.com/watch?v=rLrRk4S0BvE

Good morning Dave

Thanks for the info

Wow...she has it for 25 years from a gentleman called David Quail (the gents from your post above)...nice british accent though

25y from now, i'll be 62yo...wow...i'am so late at joining this hobby x_x
Had I joined when i was 20ish, that would have been perfect

EDWIN

[DaveW]

They probably grow faster in your sunnier climes Edwin since you probably have a longer growing year.

[Edwindwianto]

They probably grow faster in your sunnier climes Edwin since you probably have a longer growing year.

Yes Dave
I plan to document some of their growth along 2020
So i can post the result at Cactus hibernation in tropic area, to answer my own question, "does cactus hibernate in tropic area or they grow all year around?"

I plan to collect some pict every month (until Dec2020) from some species of mine

[Edwindwianto]

Hi everyone
I think the spring has come to Thailand, because the lithops start to puff up above the ground after absorbing some water

rsz_20200303_080621.jpg (51.31 KiB) Viewed 9212 times

And this is my first tubercle of L. principis which grows 4 spines...yay...

07 - Mar3rd 2020.jpg (82.03 KiB) Viewed 9212 times

EDWIN

[Sarraceniacrazy]

Looking good Edwin