Newly emerged tree and shrub foliage is susceptible to damage from below freezing temperatures. The new growth on many trees and shrubs can tolerate temperatures in the low 30s and upper 20s.
Newly emerged tree and shrub foliage is susceptible to damage from below freezing temperatures. The new growth on many trees and shrubs can tolerate temperatures in the low 30s and upper 20s.
Cultivars of the common or French hybrid lilac (Syringa vulgaris) often do not bloom for several (five or more) years after planting. The shrubs must grow and mature before they are capable of flowering.
Most houseplants, including the schefflera, experience stress when moved from one location to another. Environmental conditions in the average home are dramatically different (less favorable) than those in a greenhouse. The less favora
Asparagus plants should be allowed to become well established before any spears are harvested. No spears should be harvested during the first growing season. Asparagus can be harvested over a three to four week period during its second
Yes. Philodendrons and closely related species contain calcium oxalate crystals which are toxic to humans, dogs, cats, and other animals. When any part of the plant is eaten, it may cause pain and swelling in the lips, mouth, tongue, a
Many varieties of sweet cherry are not reliably cold-hardy in Iowa. Because they tend to bloom earlier in the season than other fruit trees, like apples and pears, they are also more prone to damage from a late spring frost. When flowe
Peaches are not reliably cold hardy in most parts of Iowa. It is possible to grow ‘Reliance’ (yellow flesh, freestone) and ‘Polly’ (white flesh, clingstone) in the southern one-third of Iowa.
While most trees and shrubs bloom in spring or summer, witch hazels are a notable exception.
Spring-flowering woodland wildflowers that are attractive additions to shady areas in the home landscape include:
White fruited pumpkins are edible. White fruited varieties, such as ‘Lumina,’ have a white skin and orange flesh. They are chiefly grown for their unique “ghostly” appearance. However, the orange flesh is suitable for cooking.&nb
Snow molds may be responsible for the brown spots in your lawn. Two snow mold diseases, gray snow mold and pink snow mold, occur in Iowa. Gray snow mold is caused by two species of the fungus Typhula, while pink snow mold is c
Bush cherries are very cold hardy and can be grown throughout Iowa. Bush cherries include:
It is advisable not to add dog or cat feces to the compost pile. Dog and cat feces may contain harmful pathogens that may not be destroyed during the composting process.
American holly (Ilex opaca) and English holly (Ilex aquifolium) are prized for their glossy, green leaves and brightly colored fruit.
Wood ashes contain small amounts of several plant nutrients. The nutrient content of wood ashes depends on the type of wood burned, the thoroughness of its burning, and other factors.
It is possible to grow an apple tree from an apple seed. However, in most cases, apple trees don't come true from seeds. For example, a seed taken from a Red Delicious apple will not produce a Red Delicious apple tree. Seedling a
Many herbs can be successfully grown indoors during the winter months. The best herbs to grow indoors include basil, cilantro, parsley, chervil, rosemary, bay laurel, mint, chives, oregano, thyme, sage, and lemongrass.
Planting garlic cloves purchased from grocery stores is rarely successful in an Iowa garden. The garlic found in grocery stores are usually softneck cultivars from warmer regions that are not well adapted to Iowa’s climate. Additionall
Individuals wishing to save their Easter lily (Lilium longiflorum) should place the plant in a sunny window after flowering. Continue to water the plant when needed. Fertilize once every 2 weeks with a dilute fertilizer soluti
A new planting site is best for any new tree.
Black walnut (Juglans nigra) is a common woodland and landscape tree in the Midwest.
While more demanding than many other perennials, the Lenten rose (Helleborus x hybridus) can be successfully grown in Iowa. The Lenten rose requires a fertile, well-drained soil in partial shade. Also, choose a site p
Cool-season annuals are annual plants that prefer cool temperatures, growing best in spring or fall. Many are tolerant of a light frost often surviving down to 28°F or sometimes even 25°F with little damage to flowers or leaves.
When a prolonged period of snow cover deprives deer of food on the ground, deer often feed on trees and shrubs in woodlands, windbreaks, and home landscapes. Among evergreens, arborvitae and yews are most susceptible to browsing by deer in w
While not widely planted in home gardens, hardy geraniums (Geranium spp.) are attractive, easy-to-grow perennials. Numerous species and varieties are available. Plants typically bloom in late spring/early summer. The 1-
Houseplants have received much attention as options for improving indoor air quality. In 1989, scientists from NASA discovered that plants could remove VOCs (volatile organic comp
Most seeds germinate best when the medium temperature is consistently 70 to 75 degrees Fahrenheit. Placing containers in a warm location in the house, such as on top of a radiator or near a heat register, usually works fine. In cool en
Tree peonies are small woody shrubs. Unlike herbaceous peonies, the stems of tree peonies do not die back to the ground in fall. Tree peonies can be successfully grown in USDA Hardiness Zones 4 to 8.
Cleaning houseplants improves their appearance, stimulates growth, and may help control insects and mites. Large-leaved plants may be cleaned with a mild dishwashing soap solution (add a few drops of dishwashing soap to lukewarm water) and a
Occasionally a florist or garden center will have vibrant blue moth orchids (Phalaenopsis) for sale. Blue is not a color that naturally occurs in orchids. These orchids are typically white flowers dyed to achieve this unique c