Re:CULT: late season planting?
- Subject: Re:CULT: late season planting?
- From: firstname.lastname@example.org
- Date: Sat, 08 Nov 2008 11:54:25 -0500
For planting outside in this late a season, I have several methods to
1) Put rhizome on top of ground , where you wish it to be. Leave it
totally uncovered all winer. When ground thaws in spring, plant it.
Far superior survival compared to planting it in regular method. Why
this works is that the plant has even temperature over rhizome during
winter so no damage to plant. Also can't heave and do damage to fine
starter roots, so conserves energy of plant. Anything planted at this
time tries to put out roots and these get destroyed over winter, even
more so with heaving. This wastes plant energy. Micro fissures in
rhizome from having tops of rhizome exposed to sun , while bottom is in
ground (heat expands, while cold contracts, temperature differential
caused fractures in skin of rhizome, leaving entry points for bacteria
, which can grow in cooler temperatures then iris, so plant cant repair
damage in time to save itself.) Discarded plants sitting on top of
ground beside planted rhizomes survive while those in ground die.
2) Plant and then place about 6" of soil over top of rhizome. Don't
remove extra soil until soil thaws in spring. same reasons as above,
except now even temperatures from depth of soil protection.
Personal opinion is that . leaving on top of soil would have better
3) Don't plant them. Leave in open air on bench in unheated building
and plant in spring. Actually this works very well. Caution, plants
want to bloom in spring, remove flower stalks.
4) Plant them when ground starts to freeze up over. that is wait
awhile. I was communicating with a person in Yukon Territories ( same
climate as Alaska) and they had iris survive over winter by doing this.
An accident of fate as they ordered iris from a garden mail order
business and plants arrived very late. Snowed the next day after
planting. They all survived the first winter, just because they didn't
get a chance to start growing, so stayed in deep dormancy all winter.
Same problem as #3, they will bloom in spring. Again, remove flower
Date: Fri, 07 Nov 2008 10:13:56 -0500
From: Linda Mann <email@example.com>
Subject: [iris] CULT: late season planting?
Betty tells me she is still putting adult irises in the ground.
Betty, are you planting intact root ball, or trimming tops & roots,
as usual planting time? You've mentioned straw mulch - do you cover
entire plant or just the soil?
Any of the rest of you have time to share experience with planting this
late in the season (i.e., about a month before the unprotected soil
might freeze & stay frozen for awhile).
What do you do re: protection?
After the experience of planting relatively small seedlings out the
before the disastrous spring freeze a couple of years ago, I certainly
won't do that again without covering them for the winter with Reemay or
But I have found some hired help, & now have some ground worked up
across the creek that is actually <soil> (not rocks!), where I would
like to line out some older seedlings.
I have so little experience planting in real soil, I'm not sure how to
Linda Mann east Tennessee USA zone 7/8
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