Growing poinsettias requires complete protection through all stages of development. The BioWorks family of products offers a proven, cost-effective system for controlling insects and plant diseases at every stage of poinsettia development.
Root Disease Control
RootShield
Controls:Fusarium, Pythium, Rhizoctonia, Cylindrocladium and Thielaviopsis, and more
Active Ingredient: Trichoderma harzianum strain T-22
Application Options:Granules and Wettable Powder
REI: 0-hour
A healthy plant starts with a healthy root system. RootShield provides long-term root protection through every stage of poinsettia development. The active ingredient is the beneficial fungus Trichoderma harzianum strain T-22 that grows on the roots “shielding” them against harmful fungi.
RootShieldPLUS+
Controls: Phytophthora,Fusarium, Pythium, Rhizoctonia, Cylindrocladium and Thielaviopsis, and more
Active Ingredient: Trichoderma harzianum strain T-22, PLUS Trichoderma virens strain G-41
Application Options: Granules and Wettable Powder
REI: 0-hour*
RootShield PLUS gives your poinsettias the same root protection throughout crop production as the original RootShield, but also provides preventative control of soilborne Phythophthora, and improved suppression of the aggressive hot-season Pythium (P. aphanidermatum).
•Cost effective: reduces or eliminates chemical root fungicide applications
•Grows on roots within a pH range of 4-8 at soil temperatures of 48 to 97°F
•Can be used in rotation with insecticides, rooting compounds, fertilizers and most fungicides
• No phytotoxic effects recorded
• OMRI Listed*
*RootShield PLUS is pending OMRI submission.
Foliar Disease Control
Cease & MilStop
MilStop – Controls: Botrytis, powdery mildew and more
Active Ingredient: potassium bicarbonate
Application Options: Soluble Powder
REI:1-hour
A broad spectrum foliar fungicide, MilStop kills on contact by pulling water from spores and their growing strands. It also inhibits enzymes involved in fungal cell wall formation by altering the pH on the leaf surface.
CEASE – Controls: Botrytis, powdery mildew, Erwinia, Xanthomonas and Pseudomonas
Active Ingredient: Bacillus subtilis (strain QST 713)
Application Options:Liquid Formulation
REI: 4-hour
The only natural way to prevent fungal and bacterial diseases. CEASE is also an effective resistance management tool. Outstanding plant and environmental safety make CEASE the right choice to protect your poinsettias - naturally. NOP Approved.
• Effective resistance management tools
• Leaves no unsightly residue
•Can be used as part of an integrated pest management program
• OMRI Listed
Click here for details about each product and the full application program.
Latest from Greenhouse Management
- Voting now open for the National Garden Bureau's 2026 Green Thumb Award Winners
- WUR extends Gerben Messelink’s professorship in biological pest control in partnership with Biobest and Interpolis
- Lights, CO2, GROW!
- Leading the next generation
- The Growth Industry Episode 8: From NFL guard to expert gardener with Chuck Hutchison
- The biggest greenhouse headlines of 2025
- Theresa Specht
- 10 building blocks of plant health