When to uncover Winter rootings?

robynbJanuary 13, 2010

After mixed success with potted rootings, I decided to try something different. I took 5 cuttings from the rose in the late Fall, trimmed them, and just stuck them into the ground under a healthy rose shrub, stuck jars or soda bottles upside-down partway into the soil over each one, and then walked away. Waited a couple months before I checked on them through the bottle glass, and when I did, all were still green and looked promising. I've checked them occasionally since (without lifting the bottles) and all have continued to look promising. Now I think I'm seeing some sprouting on them (yay!). Never having rooted this way before, I find myself unsure when I should uncover them. I'm thinking I should leave them covered because of frost, but if they actually leaf out they may start touching the sides of the jars, and I suspect that's bad. I don't want to disturb them too early and kill them, but I will need to dig them up at some point... Advice, please?

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sage_co(z5CO)

I would acclimate the young plants that have been growing under 100% humidity protection very slowly to relatively harsh environment like direct sun, dryness and cold wind.

Then, I would have to realize that the root system is not as strong as Dr. Huey. The growth would probably begin very slowly and sometimes would not be strong enough to survive in my zone 5.

Last year, I had 100% success rate of rooting under the cover of plastic jug in spring. But I lost 70% of them thereafter. The one survived even had a couple of huge flowers in the first year. But I had to cover them again this winter with plastic jugs. Of course, I started new cuttings last fall as well. The zone 9 as yours would be easier, I guess.

After second year of survival, I would treat them as the ones I buy as own root plants from nurseries in Texas or California.

Yes, it is slow experimental (especially hybrid tea) process but fun.

    Bookmark   January 13, 2010 at 8:58PM
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calistoga_al

You really have no way of knowing if you have any roots, foliage is not an indication. Take the covers off for about 30 minutes on a cloudy day. If they do not wilt put the covers back and try again the next day for an hour. When you can leave the covers off for several hours or all day without wilting you know you have roots and then only put the covers on at night as long as frost is a possibility. Al

    Bookmark   January 27, 2010 at 10:02AM
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robynb

Thank you, that was a helpful suggestion!

    Bookmark   January 29, 2010 at 5:49PM
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