Posted by Richard Corlett on 12/23/2007, 12:13 pm, in reply to "Re: Problem with Cycas panzhihuaensis from seed"
195.229.236.250
Many thanks for your reply.
The planting medium was never allowed to become dry, but I have read elsewhere that Cycas panzhihuaensis seedlings like to be kept somewhat moister than most other cycad species, so I shall try increasing the watering. The leaf tips look as though they dried, rather than rotted from excess moisture. The seeds are planted in 50% dune sand/perlite with some organic matter added.
By the way, the temperatures here (in Al Ain, United Arab Emirates) are presently around 80°F max and 59° min with average RH 50-70% so I did not think that this was the cause. As I mentioned, other cycad species that I am trying do not have the same problem.
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: --Previous Message--
: I would be grateful to receive
: advice
: on a problem that I am experiencing
: with my C. panzhihuaensis
: seedlings. Five seeds germinated
: quite quickly and within about three
: weeks of being planted four of them
: sent up leaf shoots. Unfortunately
: each emergent leaf has withered and
: dried when it is about a quarter
: inch out of the growing medium. All
: five seeds seem to have formed
: strong root systems with tap roots
: about five inches long. I am trying
: some other Cycas , Dioon and
: Macrozamia species and those that
: have sent up leaves so far are fine.
: Any suggestions?
:
: With a good root, they should be
: fine, but the reason for this could
: be for two totally different
: reasons. If the soil was too wet,
: and the leaves looked like they
: rotted off, you would want to water
: less, or get a better draining soil.
: The most probable reason will be
: that you didn't water enough and the
: leaves aborted. This happens with
: cycas a lot, enough that I mention
: in my article on water what to do
: about this. I'm going to guess that
: this is your problem, but let me
: know which was most likely.
:
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