Clematis, Early Large-flowered Clematis 'Henryi'

I've maintained a "Henryi' clematis that was frequently (twice or more per season) afflicted with clematis wilt. That experience has left...Read More me with an aversion to this cultivar.

Blackened crispy leaves are often due to a common fungal disease called clematis wilt. Large-flowered clematis are more prone to clematis wilt than the species and small-flowered hybrids. http://www.missouribotanicalgarden.org/gardens-gardening/you...

Clematis and tomatoes are two exceptions to the usual rule, and are best planted 6 inches deeper than the soil level in the pot. This protects the stem bases from mechanical damage, and helps prevent clematis wilt, whose fungus enters where there's damage.

Many small-flowered hybrids are spectacular in flower, and long-blooming. I consider them indispensable, especially the viticella hybrids. I've given up planting large-flowered hybrids, except for 'Jackmannii', which seems to be somewhat wilt resistant.

My Henryi is in its third bloom season and is really taking off. I've got it planted at the base of a bridalwreath shrub and just after a...Read Morell the bridalwreath blossoms have faded and fallen off, Henryi make its grand appearance. Gorgeous!

I attached a rectangular trellis to the back of my mailbox and planted two "Henryi" at the base of it. They didn't do much the first cou...Read Moreple of years, but in the third year they totally covered the trellis in beautiful white blooms.

I bought this last year, as a small vine ( less then a foot tall). I placed it in full sun, but made sure the roots were well multched, ...Read Moreand shaded. I also planted it 3 noded deeper then it was in its pot, as is usualy adviced for clematis.

The thing grew to over 7 feet, but didnt flower ( so im assuming what i bought was a cutting).

We had a few cold days this winter ( -32C) one night. And it was exposed for the most part. It turns out it died back to a few inches from the ground, where its comming back with a vegence! It even has 3 or 4 flower buds.

I got this from home depot, which apperantly gets their pl;ants from down so uth ( toronto for me). Their climate is slightly warmer, and I have to guess that they werent suited for the winter. Now I hope they are a bit more acclimated.