ok found my book I wanted and 2 others I didn't know were there.
The expierment was done in Southern Ontario.
dug trench laid pot in trench after ground froze cover w mulch
Dug trench laid pot wrapped in hardware fabric cover w/ mulch.
pull in garage,water every 6 weeks.
The one kept in garage ,watered every 6 weeks emerged in spring
with no disease barely any die back.
The trench with hardware cloth lost main cane had 30% die back& emerged 6 weeks later than garage kept withstood -34C temps average snowfall(was 2003)
The trench with mulch only.died,the mice made a home and destroyed the plant.
From the various roses
in experiment.some of the ones mulched in ground got diseases.only lost 6% that we're garage/shed kept.trenched method,the hardware cloth ones fared better,but alot of those showed disease problems.Was no mention of dome covers.was mention at begining of experiment about some against house with protection of evergreen limbs,but no results at end of experiment& that was Manitobia.
I think the issue with diseases could be it may have been already in the soil or in the mulch or the plant could have been diseased but when put it through the stress of wintering in those condtions the disease worsened or then showed.The expierment was about wintering roses
in the various areas of Canada.the results we're worse in zones
3 of upper Canada,but some own root roses
actually survived.I originally saved the article cause was very informative on which roses
did well& how disease resistant they we're.Maine was included in the test.Those who endured bad northeaster's along the coast.
I'd bring it inside,garage would be great or the shed would too.just water every 6 weeks.You don't want the soil wet with cold,but you don't want to dehydrate your plant either.1 liter of water was used in experiment.
.I love the flowers