… shrubs. Regardless of what kind of garden might be hidden in the backyard, the front was sure to contain at least one old-fashioned shrub: lilac, mock orange, spirea, weigela, or honeysuckle. … your year-round garden: Aesculus parviflora (bottlebrush buckeye) A dense, spreading, 8- to 10-foot shrub that produces pinky white, brushlike flowers on 1- to 2-foot upright stems in … with highly fragrant white or pink flowers. Its suckering habit makes it a good candidate for naturalistic sites. Heptacodium miconioides (seven-son-flower) The tallest of the group, it …
Type: Plant Info
… Q. What are the current recommendations for using horticultural oil to protect mature trees from insect attack? A. Spraying trees or shrubs with a horticultural, or dormant, oil is recommended as a way to help control repeated attacks of scale, mites, and aphids. Some of the common pests that can …
Type: Plant Info
… the head identify this caterpillar as a true armyworm ( Mythimna unipuncta ), almost identical to the fall armyworm ( Spodoptera frugiperda ). A fall armyworm has an inverted Y-shape on its head and is found in larger numbers late summer/fall. Adult armyworm moths migrate north to Illinois from southern states to mate and lay eggs on the bottom of grass blades and other … insects eat leaves, not roots. Heavy infestations can easily be controlled with insecticides. For more information about armyworms and control measures, please send an email to …
Type: Plant Info
… of Rhytisma fungi. Leaves that are infected with this fungal disease have round, light green to yellowish-green areas approximately ½ to 1 inch in diameter that eventually blacken. Heavily infested trees may lose their leaves … contact Plant Information Service at (847) 835-0972 or email plantinfo@chicagobotanic.org for a positive diagnosis and if you feel chemical treatment options are warranted. …
Type: Plant Info
… a little like tissue paper, and highly fragrant. In fact, "rugosa" comes from the Latin for wrinkled, but it refers to the wrinkled appearance of the leaves. That wrinkled surface is a key factor in making rugosas as a class so disease resistant. In fact, they're tough in many regards. They're hardy to zone 4. They're tolerant of light shade, salt spray, wind, and poor soil. And they're so …
Type: Garden Guide Plant
… floral bracts contrast with hot pink and purple primary bracts , with thick hot pink to red stems. Once in bloom the 18-inch flower spikes flowers will last for five months or more under proper conditions. The leaves are lime green with sharply serrated … vase plants or urn plants. The bases of their curved leaves collect water and can be home to aquatic insects and microorganisms. Plants take several years to flower and will usually …
Type: Garden Guide Plant
… in September and October when the large (6-inch tall by 5-inch wide) double flowers begin to open. Reliably hardy in the Chicago region, the plant has broad green leaves that are produced in spring and die back in early summer, so the flowers appear to spring from the bare soil in fall. Deer and rabbits dislike the chemicals in the sap, but slugs, for some reason, appear resistant to the chemicals (only a problem in wet falls). Plant these …
Type: Garden Guide Plant
… much desired by birds. It has a distinctive horizontal branching growth habit that is similar to the native pagoda dogwood. This cultivar's parent, however, is native to China. Members of the genus Cornus , commonly known as dogwoods, are welcome in the home garden for their multi-season interest -- be it flowers, fruit, foliage, and/or bark -- and their range …
Type: Garden Guide Plant
… with the mature green leaves. Clustered white flowers appear in late spring and mature to black fruits which are attractive to birds. Members of the genus Cornus , commonly known as dogwoods, are welcome in the home garden for their multi-season interest -- be it flowers, fruit, foliage, and/or bark -- and their range …
Type: Garden Guide Plant
… master ( Eryngium yuccifolium ) is one of a group of plants in the carrot family known for clumps of pale green, prickly leaves, and spiny, spherical flowerheads. It has clusters of 16 to 31 tiny, silvery white globes radiating from a central point, growing atop sturdy 3-foot stems. The flowers are slow to develop and slow to fade, and they bloom from June to September. The clumps of stiff, narrow, …
Type: Garden Guide Plant
