Protecting Poinsettias with Mainspring GNL and Avid 0.15 EC Miticide/Insecticide
With fall quickly approaching, poinsettia production is gearing up. From propagation to finish, it is important to continue monitoring for common insect pests, especially whiteflies, as poinsettias tend to attract them more than any other pest and populations can build quickly.
Adult and immature whiteflies have piercing, sucking mouthparts they insert into the phloem to extract plant sap, which affects plant vigor. Feeding injury also results in:
- Reduced leaf expansion
- Chlorotic spots on the top sides of leaves
- Leaf discoloration or silvering
- Leaf loss
- Presence of honeydew secretions on leaves that may result in black sooty mold on leaf surfaces
Whitefly damage on poinsettia
Syngenta photo, 2005
A successful whitefly management strategy includes weekly inspection of the crop coupled with the use of effective products for controlling the adult and immature stages of this pest. When scouting, it is important to examine the underside of the leaves for the presence of eggs, nymphs and adults. A 10-20x hand lens can be helpful for this inspection. Along with diligent scouting, sprays of Avid® 0.15EC miticide/insecticide early in production will help protect the young plants from Lewis mites and Q-biotype whiteflies, which may be present on in-coming liners or cuttings. After pinch, incorporate a drench application of Mainspring® GNL insecticide into your pest management program to secure robust protection against whiteflies.
Applying Mainspring GNL as a Drench
Mainspring GNL is the trusted choice to control whiteflies and more with a drench application. In a recent survey of U.S. greenhouse and nursery growers, 96% of respondents agreed that they trust Mainspring GNL to protect crops from a wide range of key chewing and sucking pests.*
A drench application of Mainspring GNL will help provide systemic protection against whiteflies during production and after shipping. Drench applications should be applied 2-3 weeks after poinsettias have been pinched, once the plants have rooted in their container. When applied as a drench, Mainspring GNL is taken up through the roots into the plant canopy, providing 10 weeks or more of protection. For best results, make sure the drench solution wets three-fourths of the potting media and apply no later than the first week of October. Get your drench on!
Download our poinsettia agronomic program to learn more about shielding poinsettias from whiteflies and other pests.
*Survey of 110 nursery and greenhouse growers in the U.S. conducted via TechValidate in Dec. 2021.
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