Laceleaf red japanese maple11/17/2023 ![]() ![]() Apply an all-purpose fungicide to the entire plant, following the label instructions carefully. Copper penetrates the leaf surface and prevents germination of spores so the fungus cannot spread. Reapply as directed on the product label. Spray a copper-based fungicidal soap on the leaves, coating the top and bottom leaf surfaces. Repeat every two weeks until existing spots stop enlarging and new spots no longer appear. Using a spray bottle, spray on tops and bottoms of leaves until the mixture drips off. Dissolve ½ teaspoon of baking soda and one teaspoon of liquid soap in a gallon of water. Organic options won’t kill the fungus, but will prevent it from spreading. It is recommended to start by applying organic treatment options, working up to the more potent synthetic, chemical fungicides if necessary. However, if much of the foliage is affected and defoliation occurs, the plant will benefit from getting rid of the infection. In spring they are tipped with red, change to green then have yellow, red or orange tones in the fall.Solutions: In minor cases of brown spot, there isn’t any need to treat the disease. Leaves: Woody Plant Leaf Characteristics: Deciduous Leaf Color: Green Red/Burgundy Leaf Value To Gardener: Showy Deciduous Leaf Fall Color: Gold/Yellow Red/Burgundy Leaf Type: Simple Leaf Shape: Pinnatisect Leaf Margin: Lobed Hairs Present: No Leaf Length: 1-3 inches Leaf Width: 1-3 inches Leaf Description: The lacy deeply dissected leaves are up to 2 inches long.Flowers: Flower Color: Red/Burgundy Flower Inflorescence: Insignificant Flower Bloom Time: Spring Flower Description: Small reddish flowers in spring.Cultural Conditions: Light: Full sun (6 or more hours of direct sunlight a day) Partial Shade (Direct sunlight only part of the day, 2-6 hours) Soil Texture: Clay High Organic Matter Loam (Silt) Sand Soil pH: Acid (Whole Plant Traits: Plant Type: Tree Woody Plant Leaf Characteristics: Deciduous Habit/Form: Erect Vase Growth Rate: Medium Maintenance: High Medium Texture: Fine.Attributes: Genus: Acer Species: palmatum Family: Sapindaceae Life Cycle: Woody Recommended Propagation Strategy: Grafting Stem Cutting Dimensions: Height: 10 ft.Tags: #small spaces #specimen #showy leaves #low maintenance #spring flowers #fall interest #Japanse garden #self-seeding #spring interest #Asian garden #fall color yellow #walkway planting #fall color red #weed Profile Video: See this plant in the following landscape: Asian Garden- Japanese Cultivars / Varieties: VIDEO Created by Elizabeth Meyer for " Trees, Shrubs and Conifers" a plant identification course offered in partnership with Longwood Gardens. The Clemson Cooperative Extension Home and Garden Information Center has a factsheet on common maple diseases and insect pests. It self-seeds easily so can spread and become weedy in the landscape. Insects, Diseases, and Other Plant Problems: Aphids, scale, maple worms, leafrollers, and leafhoppers are occasional pests. Anthracnose, leaf scorch, and frost damage, especially from late frosts, can occur. Use in an Asian garden, in small spaces, or as a specimen. In hot summer areas, it will do best with afternoon shade to prevent leaf scorch. It prefers well-drained, acidic, humusy soils in full sun to partial shade. ![]() It is very ornamental with leaves being red-tipped in spring then gold in fall. ‘Seiryu’ or Lace-leaf Japanese maple is the only dissected form of Japanese maple that has an upright habit, growing 10 to 15 feet high and 8 to 12 feet wide. Acer is Latin for sharp in and palmatum means shaped like a hand referring to the shape of the leaves. Weeping as well as upright varieties exist, and the species is well noted for its beautiful deep red and orange summer color that deepens into the fall. The Japanese maple is a short tree in the Sapindaceae (soapberry) family, native to southeast Korea and central and south Japan, and noted for having many aesthetically pleasing forms. Phonetic Spelling AY-ser pahl-MAY-tum Description ![]()
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