Mulching Annuals
A good mulch prevents water loss, helps control weeds, and can enhance the flower bed appearance. Grass clippings can be used but they deteriorate quickly and have to be replenished often. When lawns don't grow, clippings will be in short supply. ... [... more]
Michigan State University Extension |
Watering Annuals
Annuals are shallow rooted so don't allow the soil to dry out too deeply. Begin watering in the morning and water through the heat of the day. Stop in mid-afternoon to allow the plants to dry off before nightfall. Night waterings can create ideal ... [... more]
Michigan State University Extension |
AGERATUM DISEASE PROBLEMS
The only disease of consequence is powdery mildew and late in the season, infections can be ignored. Powdery mildew is a white or gray powdery growth on the leaves. [... more]
Michigan State University Extension |
AGERATUM INSECT PROBLEMS
Ageratum may be attacked by two insects. The corn earworm tunnels in stems and feeds on the foliage. The greenhouse leaf tier ties leaves together with webbing then feeds on [... more]
Michigan State University Extension |
Centaurea cyanus--Bachelor Button
Height: 3 ft Spread: 2 ft Flowers: Blue, white, pink, purple, red Comments: Bachelor Buttons are reliable plants. They have Propagation: Plant seed directly into the garden since no special soil requirements and grow in full sun or partial shade. ... [... more]
Michigan State University Extension |
Eschscholzia californica--California Poppy
Height: 12 in Spread: 6 in Flowers: Orange, pink, red, white, yellow (Vis. 1). Comments: California Poppy grows well in gardens with dry Propagation: Direct seeding into the garden is preferred. The seed germinates in 10 to 12 days at 55 to 60 ... [... more]
Michigan State University Extension |
CAMPANULA INSECT PROBLEMS
Aphids suck plant juices and are controlled with Slugs chew the leaves at night and leave slime trails. applications of dusts or sprays. [... more]
Michigan State University Extension |
CELOSIA INSECT PROBLEMS
Mites cause loss of healthy green foliage coloration but this pest is not common on Celosia. [... more]
Michigan State University Extension |
Callistephus--China Aster
Comments: China Aster blooms (Vis. 1) for about six weeks in Height: 24 in Spacing: 18 in Flowers: Blue, pink, purple, red, white Branching cultivars are taller and will be large plants if given sufficient space to develop. They may be grown in ... [... more]
Michigan State University Extension |
Cleome hasslerana--Spider Flower
Flowers: Pink, purple, white Comments: Spider Flowers are large plants whose best use Propagation: The seeds germinate in one to two weeks at Height: 48 in Spacing: 24 in is at the back of the flower border or as a temporary hedge. The flowers ... [... more]
Michigan State University Extension |
Dyssodia--Dahlberg Daisy
Height: 12 in Spacing: 12 in Comments: Dahlberg Daisy is useful as an edging plant or Propagation: The seed can be started indoors or out and in rock gardens. A profusion of gold-colored flowers are produced by twelve-inch plants when grown in a ... [... more]
Michigan State University Extension |
Nicotiana alata--Flowering Tobacco
Comments: Nicotiana produces fragrant, tubular flowers Comments: The seed germinates in two to three weeks at 68 Height: 48 in Spacing: 24 in Flowers: Pink, purple, red, white, yellow that make a good cut flower. The plants grow in any garden ... [... more]
Michigan State University Extension |
