Articles

Most of the horticulture information articles posted on this site also can be read for CE credit (0.5 hours each) if approved by the local County Coordinator. To get CE, you must note in the comments a specific thing you learned. If there is no comments box, that article cannot be used for CE (these include articles about botanic gardens, All-America Selections winners and a few others).

Recent Articles

Painted Lady Butterfly, Vanessa cardui

The painted lady butterfly is a common visitor in Wisconsin, especially in the fall. These colorful insects prefer open areas, including prairies, old fields, vacant lots, and gardens where they feed preferentially on the nectar from relatively tall herbaceous perennials. The spiny caterpillars feed on a large number of different plants. To learn more about this butterfly, read this article…

Root Crops

One in the Plants Plus Series – a remix of past training presentations, printed materials and other references focused on specific plants or topics to help you increase your knowledge so you can better answer homeowner questions. To get two hours of continuing education credit for watching the video presentations and reading the articles, just complete the short quiz! This Plants Plus package focuses on root crops.

Helenium, Helenium autumnale

For a burst of late-season color, heleniums offer something different than most other daisy-type flowers with short petals in warm, fall colors and a high, architectural center. A few of these robust perennials bloom as early as June, but most wait until August or September when the rest of the garden is waning. Learn more about the garden hybrids developed from these North American natives in this article…

Common Milkweed Insects

Almost everyone knows that monarch butterfly caterpillars live only on milkweeds, but did you know there are many other insects that feed exclusively on these plants? From other caterpillars to bugs and beetles, there are several types of insects that have developed ways to avoid being affected by the toxins in milkweeds and have become specialized feeders on these plants. Lean more about some of the most common insects found on milkweed in this article…

Mexican sunflower, Tithonia rotundifolia

With showy red flowers popular with pollinators, tithonia or Mexican sunflower is a warm season annual that thrives in the heat of summer. The species, which grows over 6 feet tall, makes a great backdrop or seasonal screen, but there are shorter cultivars better suited to small gardens. Learn more about this low maintenance Mexican native in this article…

Wheat celosia, Celosia spicata

With soft, dense feathery spikes of bright pink, red or purple produced in profusion, wheat celosia adds eye-catching upright flower architecture in the ornamental garden. Easily grown from seed, the flowers are great for fresh and dried flower arrangements, too.  Learn more about this long-flowering annual plant in this article…

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