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Roses, Clematis and Peonies
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Glossary ListGlossary Term 
Group 2
Clematis which flower both on old ripened wood and, again later in the season, on new growth. Group 2 does not require major pruning but dead and weak stems should be taken out. Pruning to control overgrowth should be done immediately AFTER the first flowering period ends.
[From Clematis For Everyone, p. 9:] Some of the varieties that belong to this group are: 'Nelly Moser', 'The President', 'Vyvyan Pennell', and 'Marie Boisselot'

[Ibid, p. 11:]... very early flowering cultivars of the early large-flowered section such as 'Edith' or 'Dawn' should be planted where they will receive some direct sunlight... [if not they are] susceptible to the unwanted greening of flowers [see also FAQ: Why is the flower green?]... and are not recommended for a north-facing positon...

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