fickleness of some petiolaris drosera

[amphirion]

two plants, same species, the one on the left is currently emerging out of dormancy, and the one on the right is starting to enter it...
truth be told, i thought i almost lost the one waking up; it's dormancy pattern is different from the other petiolaris in my collection- namely, the plant just aborts the growth point altogether, and the remaining leaves slowly die off, one by one....

drosera cadauca

 

[utricularia]

How weird. The petiolaris complex is really cool. I got my first petiolaris complex plant only a couple of months ago (D. paradoxa) but can tell I am going to be hooked.
Any idea why this behavior is being observed? I wonder what triggers dormancy in this species.

Thanks for posting! I look forward to hearing more.

 

[amphirion]

How weird. The petiolaris complex is really cool. I got my first petiolaris complex plant only a couple of months ago (D. paradoxa) but can tell I am going to be hooked.
Any idea why this behavior is being observed? I wonder what triggers dormancy in this species.

Thanks for posting! I look forward to hearing more.

for most species, it is triggered by a sustained drop in temperature (below 70). However cauduca seems to be physiologically cyclical.
Dormancy-->short leaves with traps-->long leaves with traps-->long leaves with no traps-->dormancy.

dormancy period varies from species to species- with paradoxa being 2-4 weeks long to falconeri which can be as long as 6 months.

i've been growing some of them for almost 4 years. some faithfully enter dormancy yearly, but others, such as my falconeri, have never gone dormant.

 

[bluemax]

'Sounds like D. caduca is very insistent on going dormant. I haven't grown that one but I avoid dormancy in my petiolaris 'dews like the plague when I can. I understand there are growers who encourage dormancy yearly but I find the little monsters to be hard to wake up sometimes. 'Absolutely beautiful plants, though.