Really hate this disease.
I can scrape them, and the plant can heal by itself.
If not scrape, it's sometimes turn black and rot.
Any one know what disease?

others

Many cactus attacked by this fungus, even graf one, most begin rot form surface.

I can prove this by poking it with my needle,see a hole, but scar tissue won't develop.
Is it cause by sunburn or fungus?

The item has been removed. Sorry cant see anything. pls see here http://www.ebay.co.uk/itm/Pereskiopsis-GIGANT-5-RARE-/181195976518" onclick="window.open(this.href);return false; http://www.ebay.co.uk/itm/Pereskiopsis-GIGANT-3-St-6-8-cm-Pfropfunterlage-/130768487202" onclick="wi...

Doese anyone know details of Pereskiopsis "GIGANT"? http://www.ebay.co.uk/itm/Pereskiopsis-GIGANT-3-St-6-8-cm-Pfropfunterlage-/130768487202" onclick="window.open(this.href);return false; Is it different from the normal Pereskiopsis ? New species? As you see the "GIGANT"...

Any one has experience with fresh Echinocereus seeds?
I just collect some Echinocereus scopulorum seeds.
Should I sow them now?
Or need to preserve them for severl months?

Or generally fresh seeds won’t germinate very well; only old seeds do?

I grafted herrerae v.albiflora on grandiflorus,about 3 months ago. Recently, one seeding’s top was shrank,then broke out several heads. http://www.cactiguide.com/forum/userpix/2512_6_1.jpg The other one, the base was shrank then the top grown roots on its own http://www.cactiguide.com/forum/userpix/...

I got some fress seeds.
it's about 10 days after sown,seldom were germinate.
Are they need to take long time to sprout?

Here is my seedings of TRICHOCEREUS pachanoi,about 9 months ago. http://www.cactiguide.com/forum/userpix/2512_22222_1.jpg Are they have short spines when young,while older ones are almost spineless? http://www.cactuspedia.info/schede/TRICHOCEREUS/Trichocereus_pachanoi/Trichocereus_pachanoi/Trichocer...

Dear All, thanks for yours comments I think i must use Chinosol solution: "8-hydroxyquinoline sulfate" Also known as Chinosol. Problem is, it's said that when the concentration is too high, it stops the germination of the seeds, if it is too low, it doesn’t help And if i could use this sol...

Hello Kris, it is very difficult to determine what kind of fungus (mold) is growing among your cactus seed and seedlings. It could be either a hyphomycete fungus or an oomycete. The former would include Alternaria spp., Cladosporium spp., Penicillium spp. etc., while a member of the latter group wo...

Dears, help~ it's the thrid time I sowed Sulcorebutia,but always mould as attached photos. these seeds I sowed on 24th,Feb! do you know what kind of this fungus? use what kind of Fungicide to kill this fungus? last year I use thiophanate-methyl http://www.alanwood.net/pesticides/thiophanate-methyl.h...

these seeds are extremely difficult to germinate~
Usd GA3 or Hydrogen peroxide?
Any one note some details?