Botanic Garden >> Gardening > >> Question and Answer >> Plant Diseases

Sago Palm Scale: Horticultural Oil Spray

Brown bumps on sago fronds—likely scale from earlier answer.

Confirm: Scale

Regular pesticides fail. Spray lightweight horticultural oil (SunSpray) thoroughly—top/bottom fronds, center. Sunny day best (lifts honeydew). Repeat weekly. Dead scale wash off.

Don't spray flowering plants in sun (harms bees).

Plant Diseases: Apple Tree Spray Schedule: Petal Fall to Harvest; Magnolia Scale on Mature Tree: Oil Treatment Guide; Mistletoe Scale Insect Management: Cold Tolerance and Indoor Safety; Sago Palm White Scale in Hawaii: Asian Cycad Scale, Atomic Grow Tested; Asian Cycad Scale on Sago Palm: Identification, Spray Schedule, and Monitoring; Managing Scale Insects on Japanese Holly Shrubs; Scale Infestation on Orchids: Systemic Treatment and Prevention Strategy; Scale on Palms: Safe, Inexpensive Treatment; Scale or Mealybugs on Mixed Houseplants: Dual Treatment Strategy; Sago Palm Defoliation by Landscapers: Scale or Shock?

Garden Articles

What Is Messenger (Harpin Protein) and How Does It Help Plants?

Euonymus Scale: Identification and Control

Simple Homemade Pesticide for Herb Gardens: Hot Sauce and Vinegar Spray

Money Tree (Pachira) Scale Insects: Identification and Treatment

Soft Scale on Bird of Paradise: Alcohol-Soap Treatment Protocol

Treating Scale on Staghorn Ferns: A Simple Home Remedy

Organic Grasshopper Control: Building Plant Health to Deter Pests Naturally

Plants

Eradicating Spider Mites on Mini Roses and Identifying Tomato Hornworms

Magnolia Scale? Get Accurate ID Before Treating

Mealybugs on Hibiscus: Not Fungus, Treat with Horticultural Oil

Hackberry Leaf Curl and Dieback: Drought, Borers, Scale, or Herbicide?

Ming Tree (Polyscias) Sticky Leaves: Scale Insects

Is Volck Oil Spray Safe for Rosemary and Other Herbs?

Jasmine Bud Failure: Humidity, Rain, and Fungicide Fix