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ArborSystems Whippet Fungicide (Phosphorous Acid)

ArborSystems Whippet Fungicide (Phosphorous Acid)

ArborSystems Whippet Fungicide (Phosphorous Acid)

Prevent Sudden Oak Death with Whippet

For systemic fungicide control of Phytophthora spp. and Beech Decline diseases in trees.


Whippet provides effective control of Phytophthora spp. and Pythium diseases associated with Stem and Canker Blight (Sudden Oak Death Phytophthora ramorum) and Beech Decline

Application Rate

Inject 2-4 ml every 4″ around the base (flare) of the tree. See label for details.

Note: Depending on type of bark, reduce the dosage per injection site to 1/2 ml per site and double the number of injection sites.

Do not prune back trees before injection as burning of new growth may occur. Do not inject trees in winter months.

Do not cut back the canopy of injected trees.

Timing of Whippet Injections

Injections can be made any time during the growing season but are more effective when made early in the season. Do not inject trees in winter months

Regular price $180.00
Regular price Sale price $180.00 USD
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  • In Operation Since 1977
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