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Deep root watering spikes

Deep root watering spikes
Posted by Kyle from Colorado on 2009-12-05 11:11:00

Do you recommend using the 12", 18", or 24" deep root watering devices sold at the home improvement stores as part of the drip irrigation system on pine trees? What about during the winter months when the temps. dip well below freezing - should the top of the spike opening be covered or insulated?
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