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Japanese tree lilac: Syringa reticulata

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Japanese tree lilac: Syringa reticulata

With creamy-white flowers in densely branched spikes, the Japanese tree lilac may be grown as a large shrub or small tree. It blooms for 2 weeks in very late spring or early summer, after other lilacs. Its dark-green leaves provide a sublime backdrop for the showy flowers, and its reddish-brown bark is attractively marked with horizontal lenticels (small, porelike openings), providing winter interest.

Profile

Plant typetree,shrub
Hardiness zones3 to 7
Lightfull-sun-to-part-shade
Height20 ft. to 30 ft.
Spread15 ft. to 25 ft.
Soil moisturemoist
Bloom timespring
Flower colorwhite
Bloom size1 ft. to 1 ft.
Foliage colordark-green

did you know?

The genus name Syringa comes from the Greek word for "pipe." Because of the lilac's pithy stems, two early names for it were "pipe tree" and "blow stem." Both allude to the Greek myth in which the nymph Syrinx, pursued by the god Pan, turns herself into marsh reeds, which Pan then joins and uses as his flute, or panpipe. The scent of lilacs is one of Martha's favorite spring fragrances, a sweet reminder of her childhood.

general maintenance:

To shape once established, deadhead after flowering and prune to remove damaged, diseased, or poorly placed stems.

pests/diseases:

Bacterial or lilac blight may occur.

controls:

To control bacterial blight, the most serious lilac disease, increase best air circulation by keeping shrubs well pruned (sterilize tools).

how to sow/plant:

Start with new plants or rooted cuttings. Plant in spring or fall in a sunny site with moist, well-drained soil. Set container-grown lilacs at the same depth they were in pots; adjust balled-and-burlapped plants so top of root ball is level with soil. Space at a distance equal to plants' mature spread. Water after planting, and mulch to conserve moisture.

water and fertilize:

Monitor soil moisture. Once established, water infrequently except during droughts. After pruning, feed with an all-purpose fertilizer, following label directions. Martha likes to feed lilacs 20 pounds of well-rotted manure mixed with a few cups of lime after pruning; she spreads the mix in a ring a foot away from the plant base.

garden hint:

To prolong cut lilac flowers for arrangements and bouquets, cut the stems at a 45-degree angle using a sharp knife and place them in a bucket with just enough lukewarm water to cover the cuts.

features:

  • Attractive Flowers
  • Attractive Foliage
  • Deciduous
  • Disease Resistant
  • Fragrant
  • Winter Interest

garden uses:

  • Edging

other uses:

  • Cut Flower

combine with:

an underplanting of hostas, coral bells, astilbe, or lady's mantle.

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