Dogwoods -- kousa vs Venus
9 months ago
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Comments (18)
- 9 months ago
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venus dogwood and new hamshire dogwood
Comments (11)Hi, we need two trees replaced and I'm very interested in the Venus, esp since I'm a bit north, I had 2 nurseries, one 5 mins from me (don't stock bc its Zone 6) and one 20 mins from me (its zone 5 according to them and they have one) give me conflicting Zone hardiness. I'm a bit wary now because I can't seem to find enough info with anyone growing them up here in Southwestern Ontario. Theres a C. Kousa Chinensis that is absolutely gorgeous here at half the price and I'm actually tempted to get it BUT if the Venus Blooms rivals that AND is really more Zone hardy then the choice is made. Anyone growing the Venus in Zone 5 or lower?...See MoreRutgers Dogwood/Azaleas for corner lot feature - Venus a good one?
Comments (16)Yeah, well down south I would try any of the kousa X florida hybrids, which IIRC was actually the parentage of most of the Rutgers hybrids. Big digression but interesting: The problem is even 25% C. nutallii might still cause problems much south of Northern New Jersey. For years even 'Eddie's White Wonder' was considered ungroweable on the east coast. (It is C. nutallii X C. florida) Well, imagine my surprise at seeing a labeled C. nutallii at Plant Fields Arboretum on Long Island! LI doesn't have particularly hot summers, but they are nowhere near as crisp and cool as those in the PNW. So it's a bit of a mystery. It could be that recent (past 25 years) PNW grown 'Eddie's White Wonder' trees were never doing well on the east coast because in fact they were PNW grafted onto C. nutallii; and the LI C. nutallii was either own-rooted or even better grafted onto C. kousa or C. florida by either a clever or lucky nurseryman. This narrative also nicely explains ALJ mentioning that "EWW" was once sold (mid-20th century) by a Tennessee nursery! They'd obviously have never been able to produce them by using C. nutallii rootstock; and grafting would have been a more common production means back then anyhow. So perhaps "EWW" and even 'Venus' would be better off grafted onto either C. florida, C. florida X C. kousa, or even just C.kousa. In other words, anything w/o C. nutallii. I've found with Rhodies that root rot sensitivity can be a dominant, not recessive trait. Even 1/16th R. wardii can spell doom for 'Capistrano' (Crapistrano according to the late, great Hank Schannen!) on the east coast south of Maine. So without further testing of various cultivars, knowing exactly how they were produced - for me at least the jury is still out....See MoreROSY TEACUPS DOGWOOD (Cornus kousa x nutt.)?
Comments (9)There are a number of C. nuttallii x kousa crosses on the market and they all tend to be great trees and remarkably disease resistant. I would be a bit skeptical of a zone 5 rating - I think that's pushing it. Nuttallii is not as tolerant of colder winter temps as is the kousa. I am not a fan of pink dogwoods but Rosy Teacups is considered an improvement over Satomi as far as flower production, flower size and color stability is concerned. My personal favorite of these hybrids is Venus, with enormous white flowers that are produced prolifically....See MoreWe love these Cornus kousa dogwoods!
Comments (50)On the subject of pink kousas, I have always thought they looked unappealing, to put it mildly. However when I visited Issima Plant Works and Sakonnet Garden in June of 2022, I couldn't believe how gorgeous the pink kousas along the coast of Rhode Island looked. I don't know what cultivars were involved but clearly they were 1) more commonly planted up there and 2)looked better in climates that stay 'chilly', by eastern US standards, in early summer...than they do anywhere around the mid-Atlantic. Of course this doesn't jibe with GG's account of not liking them in the PNW, but, first of all to each his or her own, second of all, there could be other temp, rainfall, or even soil differences at play. Maybe the PNW is too chilly, we're too warm, and coastal RI is just right? Around here all kousas seem to have their sepals quickly 'melt' from the June heat, it perhaps makes the pink ones uglier as they develop brownish off colors....See MoreRelated Professionals
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gardengal48 (PNW Z8/9)