Question
Where do I purchase malathion or Hordicultural oil?
I have my sago palms for years and now they are starting to dry-up and die!

Answer
Malathion and Horticultural oil can be found at your local nursery.

Oil sprays should be your first response; if used early and often this may be enough to control or eliminate the insect on your plants. Parafinnic oils or ultrafine horticultural oils such as Sunspray?as well as fish oils ?not fish emulsion - such as Organocide?can to give effective control. Malathion?mixed with oil has given good, low cost control but is hard on beneficial insects. Apply oil sprays to the entire plant at 10 days to 2 week intervals throughout the summer. Occasionally wash the plant with a strong stream of water to remove oily buildup and layers of dead ?and living ?scale insects. This cleanup also helps keeps the plant looking good. Newer chemistry includes Distance?or pyriproxyfen, an insect growth regulator formulated to be sprayed onto the foliage. Safari?or dinotefuran is a systemic control that is water soluble and can be either drenched or applied twice a year to foliage to give excellent control.