Update on Winter Performance of Merveille Crosses

Germinated in spring 2023 - winters 2024 to 2026

Merveille x Fedtschenkoniana

Never ever protected for winter. Rigid growth structure for long canes

Not as stellar as last winter - this winter 2 to ~ 3 foot canes had more than a bit of tip damage. These thin sections 6” to 1 ft plus, appeared lost, but further down appears at least one budding point survives at leaf cane node.

18” to 12 “ from crown ground all good.

Merveille x John Cabot

First time reporting on winter performance. No protection intervention.

Flexible canes as growth form. Snow pushes down quickly. Likely cause of good performance. None to 10-20% canes damage.

Red- green buds through out some cane length

Tip damage, including nearly whole cane lengths due to big foot wrong landing in fall.

Performance nice surprise.

Merveille x Porsliini Kaunota

Excellent performance by my standards.Main cane 2” to 3” tip damage on 16 “ long cane.

Rest of lower canes green budding occurring.

No pictures of any as most would say !! what looks dead to me !! Nah just kidding. Its too hard to take as small area fenced in from outside vermin.

Environment of plot - south side protected from North and east winds. As mention no interventionist protection. Don’t remember any -30C nights this winter past 7 days ago.

There are a few “Mystery to me Crosses” due to lost tags. Guessing either more JC and Fedtschenkoniana crossing examples. Though one is very thorny bolt up canes carry powdery mildew remains on cane.

It also appears in another test area one of my mosses crosses made it - but too small to pass judgement. Planted outside after germinating last spring.

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