July 24, 2015

Harvesting and Storing Onions

Onions should be harvested when most of the tops have fallen over and begun to dry.  Carefully pull or dig the bulbs with the tops attached.   

Mosquito Numbers are a Mixed Bag

Below is the summary of recent mosquito activity in Iowa from the ISU Medical Entomology Laboratory. Mosquito surveillance data can be viewed online at www.mosquito.ent.iastate.edu 

Powdery Mildew Management in the Home Garden

Powdery mildew is a common fungal disease found in a wide range of plants, that causes cosmetic damage but would not result in plant death.

Plant and Insect Diagnostic Clinic Update - July 24, 2015

The following are highlights and updates about samples and questions recently received in the Plant and Insect Diagnostic Clinic.

How Coins Help with Digital Diagnosis

One of the common recommendations when sending digital images for diagnosis of insects, plants or diseases is to include a "size reference" in the photo.

Dobsonflies: Big, Beautiful and Harmless

This is the time of year when people notice one of the largest insects in Iowa, the dobsonfly (Corydalus spp., Megaloptera: Corydalidae).  These large prehistoric-looking creatures

Diminishing Hunger: International Master Gardener Conference

The biennial International Master Gardener Conference will be held at the Mid-America Center in Council Bluffs on Sept. 22–25.  The conference theme “Horticultural Horizons in the Heartland” will include a keynote presentation focused on accessing fresh produce and diminishing hunger through food gardening and programs such as the AmpleHarvest Campaign.