|
Physical description: American alumroot has a distinctive growth habit.
The basal leaves are low growing and form a mound, whereas the
flower stems are thin and can reach 18-24 in. tall. Leaves are
evergreen, have a purple color when they are young, and become
dark green with maturity. Mature leaves reach 3-4 in. wide, are
heart-shaped, and a bit toothed along the edges, with a stiff
pubescence on both sides. The range of color of the foliage gives
it a handsome effect. New leaves are produced throughout the
season. Flowering occurs in late spring to early summer. The
flowers are tiny, only 1/8 in. wide, with a greenish white color
and are borne on very long, thin stems.
Optimal growing conditions: American alumroot performs in shade and does
not tolerate full sun in regions with hot summers, especially
if there is a lack of moisture. Keeping the plant regularly watered
is required for constant foliage production. The plant prefers
well-drained, moist soils that are slightly acidic, and has a
tolerance for gravelly or stony soils. It has a certain degree
of drought tolerance as well, and so is one of the best of this
family for gardens in the southern regions. Winter hardiness:
Zones 4 to 9.
Susceptibility to pests and diseases: Leaf spot, powdery mildew, stem rot, and leaf
and stem smut are diseases sometimes noticed. Concerning pests,
strawberry root weevil, foliar nematodes, mealybugs, and four-lined
plant bug can be occasionally observed, but the plant has no
serious pest problems.
Use:
As mentioned above, American alumroot is one of the best Heucheras
for the southern regions. It is mostly used for its foliage effect
than for its flowers, and can be used in many conditions
|
