Curious pics of grafted plants

[eve]

Not really cultivars, but all the same interesting! I saw these Arios at the ELK in Belgium.
Can anybody explain to me why they developed this spherical form? Is it due to a special grafting method or just overfeeding?

   

[fanecchissimo]

it is normal with kothsc... they usually grow round until they suffocate the stock.. if the stock is not buried but high.. a lot of plants does the same...
a big stock make them offset a lot...

[eve]

So in this case the stock will die and the Astros will reroot?

[fanecchissimo]

arios can reroot.. but you have to have some skills.. i am not an expert...

if you cut the stock very low and put it into gravel maybe they could stay on it for some years...

[eve]

Sorry, maybe I was misleading, those plants are not mine  I generally prefer plants on own roots and anyway I lack the skills...
Thank you for your comment, I understand that it would be possible to reroot them

[fanecchissimo]

i don't want to be misunderstood. not quite obvious to reroot.. really hard indeed...

[marazz53]

[Frank]

I use a method to make a own-root blocked kotschoubeyanus.
Use a hylocereus as grafting stock and making a blocked kotschoubeyanus.
Degraft with a short vascular-bandle of hylocereus and buried the vascular-bandle into the soil (removed soft tissue of hylocereus)
Roots come out from the vascular-bandle initially and the scion relies on the roots.
Since hylocereus is not a parmanet stock, the vasclar-bandle dies later but roots come out from the scion before that.
If you used a short parmanent stock, roots have never come out the scion.
This photo is kotschoubeyanus f Rio Verde, set up rooting in 2006.

I have testing an other root stock, pereskiopsis.
I set 4 plants last year and add 10 more plants in this year.
The photo is one of 4 plants.

[eve]

Frank, please can you explain to me, what 'blocked' astro means? your plants look much better than the ones i saw at ELK!

[Frank]

eve

Blocked kotschoubeyanus means multi-head scion as shown on several photos in this topic.
Seedlings of kotschoubeyanus are nornally a single head.
If you wanted to make a multi-head plant, you need grafting.

Frank

[eve]

I see, thank you Frank! I appreciate very much that you give so many detailed infos