With the warmer temperatures last week, spider mites are increasing in activity. Inspect susceptible plants such as buddleia, brugmansia, dracaena (spike), ivy geraniums, many different herbs (i.e. lemon balm, sage, and lemon verbena, lemon grass), fuchsia, thunbergia, hibiscus, hollyhock, marigolds, New Guinea impatiens, roses, salvia, scalevola, sweet potato vine, etc. Hanging baskets are both susceptible due to the hot, dry locations they inhabit and it is harder to detect early infestations. See previous message for the safest materials to apply. If using contact materials, spray thoroughly to insure complete coverage.
For retailers, it is important to insure continued sales into June. Fertilize and groom plants to keep plant materials looking as fresh and attractive as possible.
For more information see, http://www.negreenhouseupdate.info/index.php/search-form/404-retail-care-watering-cleaning-fertilizing
For information on the early season care of garden mums, see: http://www.negreenhouseupdate.info/index.php/may/864-garden-mums-early-season
|New England Greenhouse Update now online. University Extension Specialists in New England, in conjunction with USDA's Northeast Sustainable Agriculture Research and Education, contribute information to this new website. Timely updates are provided for commercial growers of greenhouse crops and flowers in Massachusetts, Connecticut and Rhode Island. You can use this additional resource for more information about current observations and recommendations on environmentally safe production practices.|
GREENHOUSE IPM COORDINATOR
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