Sunday, February 14, 2010
Quercus robur 'Concordia'
Quercus robur 'Concordia' is such a lovely, golden thing. Bright acid-like, sulphur colored leaves shine all season. I have not seen any burning on the leaves as of yet. We get hot summer sun here and the heat to go with it as well. It might be regular watering that helps maintain the leaves. The leaves will green up just a shade or two in mid-summer. But the overall look is one of golden magnificence.
It was introduced during the 19th century it was originally raised in Van Geert's nursery at Ghent, Belgium in 1843. A moderate grower though I have have ready that some folks this its extremely fast, it will reach 30-35 feet in 15-20 years. (Annual growth rate is 12-18 inches.) I have seen a second flush of leaves come on later in the season.
Being this in and 'English' oak it should tolerate highly alkaline soils and hardy to zone 4! Folks leaving in Eastern Washington and the Idaho Panhandle should be happy about this one!