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Calibrachoa Taking Hit from Insect, Disease
Calibrachoa is coming under attack from tobacco aphid, Myzus nicotianae, Cornell University entomologist Dan Gilrein said at SAF Pest Management Conference. Some growers reported the tobacco aphid is more difficult to control than other aphids.
In preliminary studies by Gilrein, 2 spray applications of Aria, Marathon and Scimitar were effective against tobacco aphid. Orthene, which is not labeled for this crop, was effective with just 1 treatment. Calibrachoa is also susceptible to tobacco mosaic virus. Fischer USA recently asked growers to discard cuttings of Callie Orange calibrachoa from its propagation facility in Ethiopia. Stock plants there were infected with tobacco mosaic virus. Callie Orange cuttings from its Portugal and China facilities were determined to be virus free.
Cut Back Ornamental Grasses Soon
Now is the time to remove dead foliage from ornamental grasses. Grasses green up earlier if foliage is removed and are more attractive without a mixture of dead and live leaves. Ward Upham provides more tips on the bottom of page 2 of the Horticulture 2007 Newsletter.
Soil Temperature Map
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