08-30-2017, 07:14 AM
My comment about people not planting oaks is pure anecdotal observation (probably tilted a bit by individual preference, to boot). But the diversity of a lot of cities' urban forest is not high- I've read that, in Toronto, more than 20% of the canopy is maple. Parks and Forestry in Toronto says that the top ten most common species make up 58% of the total population.
nms, you bring up a good point about genetic diversity. Growers do not grow from seed (since the resulting tree will have unpredictable characteristics). They grow from cuttings, so the resulting tree is a clone of its parent, genetically the same. You're right that risk can be increased from that.
nms, you bring up a good point about genetic diversity. Growers do not grow from seed (since the resulting tree will have unpredictable characteristics). They grow from cuttings, so the resulting tree is a clone of its parent, genetically the same. You're right that risk can be increased from that.