roots from scion

Hi,
I have just noticed that a few of my Lophophora on pereskiopsis grafts
have started growing roots... the two plants this has happened too are
different sizes.
Any idea why this might happen? And if I should be concerned.

I thought it could be that scion isn't getting as much nutrients as it
would like... so went looking for some.

hmm could be there is a problem with the stock. for example its roots could have rotten of any number of other possibilities. if all appears well maybe the scion just wants to go on its own roots. if degrafted they should grow on their own roots no problems.

I have heard of this happening but none of mine have done it so far. Post a pic for us watertrade sounds interesting.

My large TBM has just sent out heaps and heaps of aerial roots. Maybe it could have something to do with the weather ?

It is my understanding that this happens when the graft hasn't taken properly. Though it would seem that they took and then grew then put out roots. Seems a little odd.

Like HN said, please post some pics.

Humidity??

Sounds like a good oppourtunity to get them onto their own roots regardless WT.

grafted E. lactea crests do this all the time, variegated gymnos on hylocereus, just about anything in old age... its nothing unusual. if the grafts are young and healthy and the stocks are healthy then it is unusual. could well be due to humidity... it makes plants to strange things. my pereskiopsis in a aquarium propagator regularly send down aerial roots. in any case its a perfect opportunity to get them on their own roots.

HN, i have seen massive tall Trichocereus bridgesii monstrose specimens with thick forests of aerial roots. no idea what causes it, maybe the plant wants to grow along the ground rather than up?

I would rather wait for them to get a bit bigger before I
let them start growing on their own roots but I might have too!?1!
I have another theory; tell me what you think.... the pots are
sitting in a plastic storage container to catch any excess water when watering.
I'm thinking maybe the constant watering and feeding in the same container
without draining of has caused a build up of salts from heavy feeding (miracle
grow) and watering. The bottom of the pots has a white stain which
brushes off when dry. It’s how I imagine a salt build up to
look. - ok... so if it is an excess build up of
salts this would be restricting the uptake of some nutrients... which might
trigger the scion to put out roots... ?

The pics -

They look healthy and well fed, I don't think there is a nutrient or water issue. I'm thinking it must be an environmental issue making the plant root. Whats the humidity like ? Good air flow ? And is your light source directly above ?

the airflow should be ok.. the light is just above and has lots of vents.
I did have a damp period while I was applying some chems... this could be it.

Also if the light is directly above I have an idea. looking at your pics and where the roots are foming it would appear the area would be getting very little light. The low light and possible high humidity is creating a natural environment for rooting..... Just a thought

it sounds like a good theory, I don't mind as long it doesn't casue any problems. as already stated it could actualy be good.

my bet is humidity as well. in the rainy season many of me pereskiopsis grafts tend to root....i take this opportunity to cut and let root when the rains pass saves a lot of time and stress on the plant when degrafting comes sometimes the stocks will send out roots as well.