Black vine weevils are now showing up across the state. It is typical for the adult beetles to emerge in early summer and begin feeding on plant foliage. They primarily feed on lilacs and yews, both common landscape shrubs. Although the adults cause minimal damage, their larvae feed on the roots and can occasionally be a threat to ornamental plants, especially those grown in pots or containers.
All Flower Content
On May 20, 2019, the United States Environmental Protection Agency announced the cancellation of registrations for 12 products that contain neonicotinoid insecticides. The cancellation of the product registrations was voluntarily requested by the companies that had registered the products.
May 07, 2019
Throughout the state, dandelions are running a couple of weeks behind normal, but they are starting to show. If herbicide wasn’t applied last fall, there are still a few things South Dakotans can do to control the yellow-flowered weed said Paul Johnson, SDSU Extension Weed Science Coordinator.
The yellow flowers of spring are coming. Spring dandelion treatments are not as effective as fall, but they can be used to stop the yellow flowers from producing viable seed.
Celebrate David Graper’s Contributions to South Dakota Horticulture & Master Gardeners April 26, 2019
April 18, 2019
For nearly 30 years, David Graper, SDSU Extension Horticulture Specialist & Extension Master Gardener Program Coordinator, has shared his horticulture knowledge and enthusiasm with South Dakotans.
Many gardeners across the state of South Dakota desire to have weed-free gardens, yards and flowerbeds. Many homeowners do not want to use inorganic herbicides due to their potential health effects.
Poinsettias need bright light! They can actually probably handle full sun at this time of the year when the sun angle is low in the sky and we often have lots of cloudy weather. The important thing to remember is that if you want to keep your plant healthy, you need to give it enough light so that the green leaves can continue to photosynthesize and produce the carbohydrates that the plant needs to grow.
Chrysanthemums are the quintessential fall blooming plant that are sold in hundreds of stores of all kinds, all over the region. They are prized for their beautiful display of flowers that add so much color to our landscapes, decks and patios each autumn. They are a favorite of gardeners everywhere and have commonly become known as simply mums, which certainly has a nice homey sounding name. But not all mums are created equal! You need to shop carefully if you want plants that will look good this fall and also come back in future years and bloom before a hard freeze puts an end to their floral display in the fall.