Re: Allium Purple Sensation seeds
- Subject: Re: Allium Purple Sensation seeds
- From: D* M*
- Date: Wed, 18 Jul 2001 09:17:40 -0700 (PDT)
Propagation Infomation
http://www.mallorn.com/lists/propagation/
http://backyardgardener.com/seed.html
Allium
Hardy Bulb
Germ Days 30-365
Light
Germ temp 50
Media: Well drained
Sow Depth: Just Cover
See No. 14. Place in fridge for 4 Weeks.
Germination days.
The usual time period in which a particular variety
will germinate given optimum conditions.
Light/Dark
Seeds needing light should have no newspaper, brown
paper etc. placed over the trays. Seeds needing dark
for germination should be placed in total darkness.
Slow and irregular germination
This is the column with the "X". Not all seeds will
show at once
-prick out each seedling as it becomes large enough to
handle and don't discard the container until well over
the time suggested.
Temperature
A steady temperature between these limits is
recommended-fluctuating temperatures can damage a
seedling in its critical early stages.
Compost
Most reputable seed composts will be quite adequate
and we have indicated where a loam based type such as
John Innes or a peat based type such as Levington
would be slightly more suitable. On no account should
potting composts, which have additional fertillsers,
be used.
Sowing Depth
If in doubt sow shallowly, but always ensure that the
compost surface is damp.
J.C. =Just cover the seed with compost or sharp sand.
S=Sow on the surface and do not cover at all with
compost.
14. Stratification (cold treatment)
Some seeds need a period of moisture and cold after
harvest before they will germinate-usually this is
necessary to either allow the embryo to mature or to
break dormancy. This period can be artificially
stimulated by placing the moistened seed in a
refrigerator for a certain period of time (usually 3-
5 weeks at around 41 F). With tiny seeds it is best to
sow them on moistened compost, seal the container in a
Polythene bag and leave everything in the refrigerator
for the recommended period. However, larger seeds can
be mixed with 2-3 times their volume of damp peat,
placed direct into a Polythene bag which is sealed and
placed in the refrigerator. Look at seeds from time to
time. The seeds must be moist whilst being
pre-chilled, but it doesn't usually benefit them to be
actually in water or at temperatures below freezing.
Light also seems to be beneficial after prechilling
and so pre-chilled seeds should have only the lightest
covering of compost over them, if any is required, and
the seed trays etc. should be in the light and not
covered with brown paper etc.
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