Tree Lilac or Island Mt. Lilac, Ceanothus arboreus,
grows fast to 20' high 10' wide with large dark green leaves, medimum
blue flowers in 6" spikes, good where you want a large fast filler. Use
where you want another slower plant ultimately but you need a fast
filler. Grows 5-10'/year. Stagger plant with oaks or other slow plants
like so . ' . ' . ' . ' . Island Mt.
has done well here for years. It was severely frost burned
at 15 deg. f.and froze to the ground at 0, and it has come back better
than before. Deer love this and its hybrids. A lot of customers do not
believe this is a native as it looks 'too lush' to not be watered. We
had a customer come in to replace his originals, after 25 years, he'd
lost one. He was growing his in clay and shale, we are growing them in
decomposed granite. It has proven to be very drought tolerant. Most
people overwater. If you have rainfall greater than 15 inches/year,
water the first year only. Butterflies like the flowers and the quail
eat the seeds. Click here for
more about Mountain Lilacs.
Ceanothus arboreus, Tree Lilac, or Island Lilac makes a good screen or fence line plant.
Ceanothus arboreus tolerates sand and clay.
Foliage of Ceanothus arboreus has color green and is evergreen.
Flower of Ceanothus arboreus has color blue and has a fragrance.