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tree that won't drip sap for shady location
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Posted by carolineridge wa (My Page) on Sun, Feb 7, 10 at 20:21
I have a large alder tree in my driveway that is coming down. I want to replace it with a tree that will be cleaner, i.e., not drip sap and pollen all over my cars. It is on the north facing side of the house. It is a rather shady spot with lots of ferns around. The driveway is a path a crushed gravel and the yard has very natural planting scheme.
Any suggestions would be greatly appreciated.
Some favorite trees:
Himalayan birch
Stewartia
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Follow-Up Postings:
RE: tree that won't drip sap for shady location
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| Healthy trees generally don't 'drip' sap :-) Or at least not from their foliage. What you may be experiencing is an insect infestation that results in an accumulation of honeydew, a sticky, sap-like substance, that drips off the leaves. Red alders and birches are quite prone to this. The Stewartia, Japanese maples or kousa or hybrid dogwoods sound like they would work in this situation and do not tend to produce much "litter". But they don't grow very rapidly or particularly large either, so you would need to take into consideration cars and clearance when siting alongside a driveway. Stewartias in particular tend to be widest at their base and often rather low branched. |
RE: tree that won't drip sap for shady location
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| The insect doing it would be aphids. They produce a honeydew liquid that the aphids release from the terminations of their alimentary canals, As they feed on the sap of the tree. |
RE: tree that won't drip sap for shady location
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| This is a good opportunity to tie the subject heading to the recent thread about fertilizing with nitrogen around trees. Excess nitrogen often results in opportunistic critter infestations, esp aphids. Dan |
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