Topiary is the art of fashioning living plants into ornamental shapes. The art of topiary has been practiced for centuries, dating back to the hanging gardens of Babylon. Topiaries were also very popular in English gardens.
Several ivy geranium samples have arrived in the Plant Disease Clinic showing symptoms of edema. Early symptoms of edema include tiny blisters on the undersides of leaves. Petioles and stems may also be affected.
Three flowers have been chosen as All-America winners this year. The AAS Bedding Plant Award goes to 'Celebrity Chiffon Morn' petunia. The 2-1/2 inch pastel pink blooms are an improved multiflora type called floribunda.
The Problem -- In Iowa 2/3 of the original forest is gone. Much of the forest left in Iowa is found in our communities, but in most communities more trees are being removed each year than planted.
The Horticulture and Home Pest News staff would like to welcome Dave Minner to Iowa State University. Dave will be joining the Horticulture Department as the Extension Turf Specialist in January.
Most of the problems that occur on indoor plants are not caused by infectious plant diseases, but are related to improper cultural practices or unfavorable environmental conditions.
Nematodes are microscopic worms that are free-living or parasites of plants or animals. Most plant parasitic nematodes live in the soil and attack plant roots. Foliar nematodes, in contrast, feed on the aboveground parts of plants.
One of the enduring folk tales that relates to insects is that you can forecast the winter weather by examining the woollybear caterpillars in the fall.
Many gardeners are enjoying a renewed interest in water gardening. Water adds a special effect to the landscape and fish are easy to care for pets. A properly functioning water garden takes care of itself naturally throughout the growing season.
Fall is a busy time for gardeners. With so much to do, lawn care is sometimes neglected. However, proper lawn care in fall helps insure an attractive, healthy lawn next season. Late fall lawn care includes:
The Iowa Pesticide Act was amended last year to change the certification requirements for commercial pesticide applicators. Applicators may now choose between continuing education or testing to maintain their pesticide applicator certification.
Most homeowners prefer a landscape that requires minimal maintenance. To accomplish this goal, planning is required. Planning begins with a thorough study of problem areas, desirable areas, site conditions, and finally a study of the user's needs.
Sirococcus shoot blight of spruce was diagnosed recently in the Plant Disease Clinic. The disease is caused by the fungus Sirococcus conigenus and predominantly affects the current year's growth on pine, spruce, and hemlock.
Plants grown for their foliage effect add a special touch to the flower garden. This is especially true during the transition between summer and fall when flower color in the garden is lacking.
