Little Boy Blue Lilac: Size, Zones, Bloom Time and Care

Lilacs are supposed to bloom in spring, so a big shrub covered in cream flowers when summer begins catches people off guard. Little Boy Blue is a Japanese tree lilac, and that early-summer timing is the first thing to know before you buy one.

What Is the Little Boy Blue Lilac?

Little Boy Blue is a Japanese tree lilac, grown as a very large shrub or small tree that reaches about 20 to 30 feet tall. Plan for a canopy that spreads 20 to 25 feet, which is wider than many front yards can spare.

The huge clusters of creamy white flowers open in early summer, and they are the main ornamental feature. The color reads white to cream, with a grayish cast in some light.

Do not expect the classic lilac perfume. The scent is closer to privet than to the spring-blooming lilacs, so this plant earns its place for the show, not the fragrance.

Where Does the Little Boy Blue Lilac Grow Best?

Check the zone range on the plant tag, then look at your soil and exposure. It tolerates poor, clay or alkaline soil and the stresses of urban sites. It flowers best in full sun with good drainage. Regions where those conditions are common suit it well:

• Gulf Coast: This lilac has high aerosol salt tolerance.
• Cape Cod: This tree has high aerosol salt tolerance.
• Georgia Piedmont: Heavy red clay is the usual complaint here, and this lilac accepts clay as long as water does not sit around the roots.
• Nebraska and Kansas plains: This lilac tolerates alkaline soil.

The state selector shown just below this section takes you to the page for your own state, with timing that fits where you live.

How to Care for the Little Boy Blue Lilac Through the Year

Early Summer Bloom

The flowers arrive in early summer and put on their show briefly, so watch for them and enjoy them while they last. A tree planted in full sun with good drainage flowers most heavily, so if a young plant is thin on blooms, look first at shade from nearby trees or a wet planting spot.

After Bloom Pruning

Pruning needs are low. Prune only when the tree needs it. A heavy cut is rarely called for, and there is no need to shear it into a ball.

Summer

Drought tolerance is moderate.

Fall

Check local guidance before choosing a planting time. Pruning needs are low.

Winter

Check the tree occasionally during winter. Its aerosol salt tolerance is high.

Little Boy Blue Lilac Diseases and Weak Points

This lilac has few of the troubles that plague common lilacs, which is a big reason people choose it. It resists pests and diseases well, though that does not mean it is pest-free.

It is susceptible to verticillium wilt.

Good drainage helps the flowers look their best.

Is the Little Boy Blue Lilac Right for Your Yard?

It suits a yard with room to spare, a sunny spot and soil that drains, and it asks little in pruning. It is a poor match for a small lot, a shady corner, or anyone who wants the old-fashioned spring scent.

• The best planting and care months depend on your climate, so check what fits your area before you buy.
• Check the zone range on the plant tag at the nursery, then compare it with your state page before you dig.

Common Questions

How Far from the House Should You Plant a Little Boy Blue Lilac?

Measure from the trunk to the nearest wall, wire or walkway, then leave room for the full mature spread rather than the size of the nursery pot. A tree this wide crowds foundations and power lines if it goes in too close.

Can You Train a Little Boy Blue Lilac into a Single-Trunk Tree?

Yes. Ask the nursery whether the plant was trained to a single trunk.

What Does Verticillium Wilt Look Like on a Lilac?

This lilac is susceptible to verticillium wilt.