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. It also helps keep the roots cool.
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.
We moved to Laval North 2 years ago and planted Marie Boisselot with other Clematis . It is so beautiful and flowers from June to late S...Read Moreeptember early October which is rare for Quebec. I would like to purchase 2 more but can not find the plant here.
This is second year. Grew about 6 feet last year but no blooms. Cut to 1 foot late winter and is now up about 5 feet and has several be...Read Moreautiful huge (5" - 6") white blooms. Very impressive for a Clematis down here (Gainesville FL 8b/9a depending on who you talk to).
Added May 16, 2021: After trying (and failing) a few times to root cuttings, I learned that clematis cuttings root from internodes rather than from nodes. Since then I have easily rooted cuttings of various cultivars and species including 'Marie Boisselot'. Take a firm mature or even woody cutting with at least one set of leaves and buds and cut just above the first leaves/nodes BELOW that node. Apply rooting hormone to the lower inch or so of bare stem and insert into your rooting medium. Then process whatever way you normally process any other cuttings (mist, shady spot, windowsill, bag, etc.). I've had them root in as little as 4-6 weeks under mist. You can get a number of cuttings from 2 or 3 feet of vine.
Beautiful large pure white flowers on a vine that climbs up nicely on a trellis. It has more flowers and blooms more consistently than He...Read Morenryi, it also has larger flowers. I would consider it one of the best whites, far surpassing both Henryi and Gillian Blades in my garden.
When this plant gets established it has the most beautiful flowers, but so far has not grown very tall in the 6 years I have had it. An ...Read Moreoccasional slightly heavier prune may encourage it. I purchased this as Madame le Coultre, syn. Marie Boisselot, and in most places you will find this is claimed.
However, as found on clematis.hull.ac.uk it is as follows:
'Marie Boisselot' is extremely similar to 'Mevrouw Le Coultre' which is sometimes (wrongly) listed as a synonym. Victoria Matthews, the International Clematis Registrar, notes that the anthers on 'Marie Boisselot' are completely yellow whilst on 'Madame Le Coultre' the connectives quickly go black at the tip.
On careful inspection of mine, in the absence of the black tips to the anthers I must assume it is Marie Boisselot.
We've had a wild ride with this one. At the outset it was given to wilt and did so repeatedly inside the first two years. In its third ye...Read Morear it became shielded by a Westerland bush; it might be that or it might be that it's simply a mature plant now - in any case it came back with a vengeance and is a big strong heavily flowering mass now.
Hardy to Z4a.
Blackened crispy leaves are often due to a common fungal disease called clematis wilt. Large-flowered clemat...Read More
We moved to Laval North 2 years ago and planted Marie Boisselot with other Clematis . It is so beautiful and flowers from June to late S...Read More
This is second year. Grew about 6 feet last year but no blooms. Cut to 1 foot late winter and is now up about 5 feet and has several be...Read More
Beautiful large pure white flowers on a vine that climbs up nicely on a trellis. It has more flowers and blooms more consistently than He...Read More
These blooms are so large and beautiful they look like gleaming white water lilies climbing up your trellis.
When this plant gets established it has the most beautiful flowers, but so far has not grown very tall in the 6 years I have had it. An ...Read More
We've had a wild ride with this one. At the outset it was given to wilt and did so repeatedly inside the first two years. In its third ye...Read More
Awarded RHS Award of Garden Merit in 1993.