[pbs] Haemanthus growth cycles?
Matthew Gale
matthewgale at talktalk.net
Sat Jun 23 10:51:04 EDT 2007
Thanks, Lauw. I have some seedlings which were germinated during UK spring,
and are growing during our spring/summer, so I guess there's a possibility
that they will continue this cycle. I wonder whether the process you
mentioned works well with Amaryllids which retain their roots during
dormancy?
I remember reading mails which discussed strategies for getting
winter-growing southern hemisphere plants to grow in the northern
hemisphere's winter, but what happens if you don't do this? I would be
really interested to know if anyone has had any success with such plants,
particularly people who experience really cold, wet (non-Mediterranean)
winters.
Matthew
----- Original Message -----
From: "Bulbargence" <dejager at bulbargence.com>
To: "Pacific Bulb Society" <pbs at lists.ibiblio.org>
Sent: Friday, June 22, 2007 7:11 PM
Subject: Re: [pbs] Haemanthus growth cycles?
> Mathew,
> In Holland they are very good at that. The bulbs are planted in the
> spring,
> lifted the end of the summer and put in warm storage (to simulate the
> summer
> dormancy) These bulbs are offered for sale in the spring. The species
> concerned are Moraeas, Tritonia, Sparaxis, but I suppose that this
> procedure
> may also apply to Haemanthus coccineus. For this experiment you better buy
> bulbs grown in th southern hemisphere.
> Bonne chance
> Lauw de Jager
> BULB'ARGENCE
> Mas d'Argence
> 30300 FOURQUES, France
>
> tel 33(0)466 016 519 ou 33(0)877 733 970 fax (0)466 011 245
> Code Skype telephone: dejagerlauw
>
> http://www.bulbargence.com mailto: dejager at bulbargence.com
>
>
>
>
>> I guess this is a strange topic, since most of us try very hard to
>> simulate
>> the conditions our bulbs experience in the wild, but has anyone
>> successfully
>> encouraged winter-growing Haemanthus to grow during the summer in the
>> northern hemisphere? I guess there would be very little point for those
>> of
>> you living in California, but what about the people who live in less
>> sun-kissed climates?
>>
>> I often think about how much easier it would be if my winter growing
>> Haemanthus would just grow in the summer when the light would be better.
>> I've never tried to get them to grow in the summer instead, primarily
>> because I'm not sure about what triggers dormancy and growth in
>> Haemanthus.
>> I used to think it was drought followed by moisture, but I now keep the
>> base
>> of the pots damp during dormancy in order to keep the roots in good
>> condition and have, occasionally, had accidents with watering during
>> dormancy which don't seem to cause the plants to spring into growth. Is
>> temperature the trigger, or a combination of both?
>>
>> Has anyone got any thoughts on this?
>>
>> Matthew
>> UK
>>
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