Ishmael Fleishman Posted September 6 I have a question about seedlings - I have assorted Trichocereus grown from seed. Now I have noted that the spines seem excessively long for these tiny seedlings. So my question is are seedling spine length indicative of their mature adult state? Also I have a few trichocereus pachanoi matucana the seedlings are 20mm tall but the spines are easy 5-6mm long and the rib count is 9. Will these rib count stay reasonable stable or do seedling loose their ribs as they mature. Share this post Link to post Share on other sites
fyzygy Posted September 6 I have a few varieties that exhibit (relatively) spineless growth when mature -- but emergent pups will usually have spines. Most tricho seedlings (even scopulicola) have spines when young. The pups on one of my cultivars start off looking like a pineapple, there are so many ribs ... before settling down to the usual 5 or so. Short answer, you'll just have to wait and see. Share this post Link to post Share on other sites
Ishmael Fleishman Posted September 6 yes - they look like pineapples with serious attitude. will wait and see. fyzygy you once posted about a research paper about growing cacti in pots and that a pot above X gallons would allow the cactus to fully grow into its adult form. Do you remember what size the pots was? Share this post Link to post Share on other sites
fyzygy Posted September 6 14" diameter - and it was a university or botanical garden in Arizona, where the big ones grow. Share this post Link to post Share on other sites
Ishmael Fleishman Posted September 6 Thanks - honestly that is not that big my two largest trichos have been planted into 85L - 600mm wide pots so they should be happy in those for sometime. Share this post Link to post Share on other sites
