In general: Insecticides can effectively protect ash trees from EAB ... to avoid placing the insecticide beneath feeder roots. To facilitate uptake, systemic trunk and soil insecticides should ...
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Gardener learns warning signs of suffocation after noticing decline of trees: 'They're suffocating with how they're planted'Trees need ample space for their root systems to spread and to establish themselves securely. Green ash trees, particularly, have shallow, wide root systems that can spread up to 50 feet laterally ...
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