Dark green foliage lasts throughout summer. The common lilac (Syringa vulgaris) is a popular perennial shrub that produces fragrant white or purple flowers. Choose from over 280 flowering cherries, crab apples, rowans and other ornamental trees. reticulata 'Willamette'): A more narrow, upright form (25 … Ivory Pillar™ Japanese Tree Lilac is a spectacular tree. Remaining root tissue may produce suckers in the next growing season. This bush has gotten just huge and full of beautiful green leaves and new buds yet I am very concered that the root system has gotten into our septic tank. This tree is clearly more upright and narrower than other reticulatas. Golden Eclipse Japanese tree lilac (Syringa reticulata ssp. Black gum, blue atlas cedar, ginkgo, golden rain tree, horse chestnut, certain oak varieties (red, Regal Prince®, swamp white, white, and willow), planetree, yellowwood, and zelkova are some of the best options. reticulata 'Golden Eclipse'): A more compact form (to 24 feet high). In late spring it will bloom panicles of fragrant, creamy-white flowers. Some trees have deeper root systems. Selected specifically for its pyramidal form. They may appear in borders, lawns, between paving stones or through paths, and can become a nuisance. Dig a trench around the perimeter of the tree wide enough to accommodate the rootball. Lilacs (Syringa) are small trees or large shrubs known for their superb scented flowers. Suckers are growths that appear from the root systems of many trees and shrubs. Autumn 2020 Order now for delivery from w/c 30th November (pot grown) or December onwards (for bare-root). Mark the cut line with flour, spray paint or a garden hose. Due to having lilac bushes in the front yard and seeing how they grew I felt confident in planting this new one in the back next to our fence line yet around 5 feet from our septic tank. Leaves develop gold edges as the season progresses. These trees will make much better options in your landscape and are way less likely to develop surface roots. The root system of a lilac tree is deep and wide, often creating a large rootball requiring two or more people to pull from the ground. Ivory Pillar™ Japanese tree lilac (Syringa reticulata ssp. Consider a smaller tree. How to Get Rid of Old Lilac Roots & Trunks.