Tanacetum haradjanii
grows 4-6" tall and slowly spreads to 2 feet or more if there is
water. The Silver Tansy mounds and flows over obstacles rooting when
it hits the ground if there is any moisture. The yellow flowers
bloom in Spring and are very short-lived. The flowers are truly more
nuisance than benefit. I cut them off the Silver Tansy after a
couple of weeks. Second year foliage of Tanacetum haradjanii looks
pretty rough so I cut that off too as the new growth comes on in the
Spring. I planted Tanacetum haradjanii near a Walnut that eventually
grew big enough to shade it for half a day, I think the plants looked even
better except that extracting the leaves was difficult. The Silver Tansy is capable of growing in clay soils if
there are adequate intervals between irrigation cycles. Tanacetum
haradjanii has survived Winter temperatures the low to mid teens, and
likely capable of surviving more difficult extremes.
High
resolution images of Tanacetum
haradjanii are available.
