Had two tree problems last year that I don't want to have happen again.
- Dakota Pinnacle Birch Tree w/ leaf miners that turned all the leafs brown early in the season and never really recovered. Tree still grew but the miners started destroying new growth later in the season as well.
- 3 x Columnar Aspens with a major aphid problem which turned into a wasp problem later in the summer. Didn't cause any damage but so many wasps in the backyard sucks.
Anyways, when should I get an arborist out to spray/treat these 4 trees for those 2 problems? Want to be proactive so I get some solid growth this year.
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