Joel from Temecula, Ca writes
They have fungal like blemish.
We apologize that the Monterey Garden Phos Systemic Fungicide is no longer available on our site and it does not list applications for dragonfruit trees on the product label. We recommend having the disease identified locally through your cooperative extension office for suggestions on safe products to apply for your needs. Please let us know if we can assist with your future needs!
Answer last updated on: 08/27/2022