That said, most shrubs like lilacs take up to 8 weeks to root, so patience is key. After about one month, carefully remove two or three of the cuttings to check on their root development.

Another reason that a lilac bush does not bloom is because of its having a restricted root system. A restricted root system prevents the lilac bush from taking up enough phosphorus in order to bloom.

Most of these shrubs are common lilac (Syringa vulgaris). ... Lilacs also tend to spread from suckers growing up from the root system, which may need to be removed.

Tip the root-ball and slip a tarp under it, so you can slide the tarp to the new location. Have the hole prepared in the new location before you dig up the plant.

Ideally, the root ball should be at least as wide as the above-ground part of the shrub. Rhododendrons need moist, acid well-draining soil, with protection from scorching sun and wind.

Lilacs are shrubs that spread from a central root mass, sending up shoots, which are identical to the initial plant. There should be no difference in the flowers caused by neighboring lilacs.