Herbaceous ornamentals add interest to our yards and gardens with bright, beautiful flowers and interesting foliage. Whether native, non-native, sun-loving or shade-tolerant, herbaceous plants invite wildlife, provide for pollinators, and bring us enjoyment with color, texture and fragrance.
Native & Naturalized Selection
If you’re unable to find the information you need, please submit your gardening question here:
This handy chart lists pesticides that are most effective against common greenhouse pests such as aphids, scales, leafminers, spider mites, and thrips. Formulation, effectiveness, cautions, and other details are provided.
Leaf streak is a common disease of daylilies, affecting daylilies wherever they are grown. Daylily varieties can vary widely in terms of their susceptibility to the disease. Oftentimes leaf streak is a cosmetic problem, causing little damage, but sometimes can cause substantial leaf loss or complete defoliation of daylily plants. Learn how to manage this disease in this factsheet.
Nicole Uelmen*, UW-Madison Plant Pathology Revised: 3/6/2014 Item number: XHT1231 What is hollyhock rust? Hollyhock rust is the most common fungal leaf disease of hollyhocks (Alcea rosea). Many other ornamentals (e.g., flowering maple, rose mallow) and weeds (e.g., common mallow) in the mallow family are also susceptible. Hollyhock rust can quickly spread, causing stunting of […]
Jenna Lind, UW-Madison Plant Pathology Revised: 6/24/2013 Item number: XHT1223 What is impatiens downy mildew? Impatiens downy mildew is a disease that has become a serious threat wherever impatiens are grown. The disease has recently become a serious issue in the United States, including Wisconsin. Impatiens downy mildew has been so destructive in many areas […]
When it comes to digging in the garden or pruning trees and shrubs, having high quality tools that are cleaned, lubricated, sharpened and otherwise properly maintained, makes any outdoor job simpler and more efficient. Learn how to maintain your garden tools in this useful factsheet.
Learn how to water woody plants to help them survive prolonged periods of drought in this article.
This publication describes plant damage caused by deer, and illustrates numerous methods for protecting plants from deer.
Learn how to make the most of your garden. Features tips for setting up and planting raised beds, including wheelchair access.
Western flower thrips are likely the most serious pest of greenhouse crops in the world. Learn about these pests, the damage they cause, and management options in this factsheet.
Several types of mites can cause serious damage to a variety of greenhouse crops. Learn why mites are a problem in greenhouses, and what to do about them, in this factsheet.
Aphids can be persistent and serious pests in the greenhouse, and can be difficult to control due to high reproductive capability and insecticide resistance. Learn more in this factsheet.
Ralstonia wilt is a usually lethal disease that affects a wide variety of vegetable and ornamental plants. Learn about symptoms and how to avoid problems with Ralstonia in this factsheet.
