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Primary leafminer (Order Diptera, Family Agromyzidae) injury is from the larvae feeding within leaves, making a narrow winding trail, or mine. Larval mines disfigure ornamental plants and vegetable plants may have reduced yields if populations are high. During heavy infestations, larvae may produce leaf mines in flowers. Adult leafminer flies puncture leaves for feeding and egg-laying, and the small white spots will indicate leafminer activity. Leafminers have a very wide host plant range.

Leafminers develop from egg to adult in 14 days (95°F, 35°C) to 64 days (59°F, 15°C). Other species have different lower and upper limits for development, but development trends are similar. The developmental stages are egg, larva (three instars), and pupa (depending on the species, this stage may occur on or off the plant). Leafminers generally do best when plants are high
in nitrogen.

Marathon® 60 WP G&N in WSP - Systemic Insecticide
For Systemic Insect Control in Ornamental Crops
Rate: 1 x 20 gram packet in appropriate amount of water
Signal Word: Caution REI: 0 - 12 hours (read label)

Marathon® 1% Granular - Systemic Insecticide
For Systemic Insect Control in Ornamental Crops
Rate: Refer to label
Signal Word: Caution REI: 0 - 12 hours (read label)

Marathon is applied topically or as a drench to control leafminer in leaf tissue. For best control apply prior to high infestation. Control is in excess of 8 weeks. Monitor watering techniques for 10 days to avoid leaching. Always read the label.

Marathon® II – Translaminar Systemic Insecticide
For Foliar Applications for Insect Control in Greenhouse, Nursery and Interiorscapes
Rate: 50 mL (1.7 oz.) per 100 gallons
Signal Word: Caution REI: 12 hours

Marathon II is for foliar applications only. Marathon II full cover spray should commence before intense insect pressure is present. Marathon II is compatible with commonly used pesticides and foliar fertilizers. The use of a spreader/sticker is recommended. Marathon II can achieve 14 to 21 days control. Always read the label and technical bulletins prior to product use.

Azatin® XL - Insect Growth Regulator
For Indoor and Outdoor Use on Ornamentals and Horticultural Crops
Rate: 12 — 16 oz. per 100 gallons (Curative)
Signal Word: Caution REI: 4 hours

Spray applications of Azatin XL insect growth regulator will control larval and pupal stages and repels adults. Tank mix with Decathlon 20 WP synthetic pyrethroid to control pupal, larval and adult stages of leafminer. Repeat applications at 5 to 7 day intervals. Refer to Azatin XL leafminer technical bulletin. Always read the label.
Azatin is a registered trademark of Certis USA.

Decathlon™ 20 WP — Synthetic Pyrethroid
For Broad-Spectrum Control of Crawling and Flying Insect Pests on Ornamentals and Nursery Stock
Rate: 1.9 oz. per 100 gallons
Signal Word: Caution REI: 12 hours

Spray applications of Decathlon 20 WP synthetic pyrethroid will control adult stages of leafminer. Tank mix with Azatin XL insect growth regulator to control larval and pupal stages. Repeat applications at 5 to 7 day intervals. Always read the label