Hippeastrum fertility

Vlad Hempel via pbs pbs@lists.pacificbulbsociety.net
Sat, 23 Jan 2021 14:14:13 PST
Hello Tim,

Do you live in a cold climate, with short days in winter?

Growing conditions affect the success of seed growing, yes. The most
important is however the genes combinations (and we know it is different
every time), then the condition of the bulb (how it grew last season),
temperature, light, humidity and nutrients.

I, personally, have more success with the spring and summer and less with
winter crosses (especially from Nov to Jan, when there are the shortest
days).

Growing lights help to some extent in winter, but not always. I guess after
all it is about genes combinations, as I have repeated the same crosses and
sometimes it was very succesful, while next time there were almost no seeds
at all.

Hope this makes sense,
Vlad




On Sat 23. Jan 2021 at 21:41 Tim Eck via pbs <
pbs@lists.pacificbulbsociety.net> wrote:

> Does anybody have any idea if there are growing conditions that affect
> fertility in hippeastrums?  I am aware that many perennials initiate
> blooming better under stress than when well nourished so I don't fertilize
> or water them much before buds appear.  But does a similar effect affect
> capsule abortion?
> I often see the capsules begin to enlarge and then shrivel up and I wonder
> if I didn't fertilize them if the same thing would happen.  Right now I'm
> seeing about 85% of hand pollinated ovaries begin to enlarge but only about
> 10% continue to maturity,  Any ideas?
> Thanks
> Tim
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