Re: HYB: seeds germinating

When the rapid switch between freezing and thawing pushes solid objects out of the
ground due to the expanding ice.

Hope this helps.


----- Original Message ----- 
From: "loic tasquier" <tasquierloic@cs.com>
To: <iris@hort.net>
Sent: Monday, December 18, 2006 11:12 AM
Subject: Re: [iris] HYB: seeds germinating


> hi Bruce
>
> couldn't find the meaning of HEAVING in the dictionary, or in fact found so
> many entries, i don't know which one applies...
> Can you help me here?
>
> Loic
>
>
> ----- Original Message ----- 
> From: "John Bruce" <jbruce1@cinci.rr.com>
> To: <iris@hort.net>
> Sent: Monday, December 18, 2006 4:30 PM
> Subject: Re: [iris] HYB: seeds germinating
>
>
> > Betty-- 
> >
> >
> >> John, you don't mention any type of mulch over the pots other than
> >> hardware
> >> cloth. Do you have any serious problem with seed surfacing in the spring
> >> due
> >> to beating rains or the heave from alternating freeze and thaw?  Do you
> >> watch
> >> for these and punch them down?
> >
> > I do not have much of a problem with freeze-thaw heaving with the light
> > potting
> > mix. Sometimes the seeds have surfaced, so I just dump another 1/2" of
> > potting mix
> > in the pot. I do not overly worry about some seed exposure--when seeds
> > drop to the
> > ground in nature they do not get buried very deeply if at all. My very
> > first year
> > of planting iris seeds (way back when) I did put them in a heavy soil mix
> > and
> > about an inch deep. Germination was poor, there were a lot of rotted
> > seeds, and
> > there was some damping off. I changed my methods to what I use now and
> > have not
> > had problems since. The only problems I had in subsequent years was when I
> > transplanted the seedlings straight into the ground. They grew, but I
> > suffered
> > some losses from heaving--seedlings don't seem to tolerate this as well as
> > adults.
> > That is when I started potting up the seedlings into 4" pots, letting them
> > grow
> > (and fertilizing them every couple of weeks) until they are nearly
> > rootbound and
> > then planting the soil ball early enough for the roots to take hold. That
> > ended
> > 90% of the heaving issue.
> >
> > John Bruce
> >
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