Hostas are easy to grow, de tol
nt, herb
perennials. Grown mainly for their beautiful foliage, hostas exist in a wide range of
pes, colors, sizes, and tex
es. They were once classified in the family Lili
ae but are now included in the family Agav
ae. Hostas are also called plantain lilies or Funkia, but these names are outdated. The scientific name for hosta is also its common name.
Hostas, nat to Japan, Ko
, and China, were imported to North America in the mid-1800s. From the handful of species that were imported, hybridizing and tissue cul
e propagation have inc
sed opti
for today's gardeners as there are many species and th
ands of cultivars available.
If we're at all familiar with gardens, the name hosta evokes an image of a -growing g
n plant with large broad leaves. To be
e specific, a hosta is a non-bulb
lily that is a
de tol
nt, hardy perennial plant grown p
cipa
for its foliage. But hostas produce pendul
1" to 2" long white or violet f
ers on an erect panicle up to 31" tall.
Hostas are hardy in USDA zones 3 thgh 8, meaning they grow in most a
s except deserts and the tropics or subtropics. They need about 700 h
s be
40 deg
s F to meet their dormancy requirements.
Hostas pre moist, l
t, humus-based acid
l. The
l should be rich in organic matter and it can be any form: peat moss, rotted or composted manure, rotted sawdust, or composted leaves. By adding large quantities of organic matter, mois
e retention and a
tion of the
l is improved. Due in part to their leaf size, hostas have a very h
transpiration rate, and so
l conditi
should al
for optimum water retention.
Keep in mind that with hostas, whichever you choose, you can not go wrong. However, there are two keys to growing hostas successfu
: l
t and water. Most newcomers think all hostas do b
in full
de, but this isn't true. Hostas tol
te varying deg
s of
de, yet some like the sun. Each variety of hosta has a dif
ent l
t requirement, so you can plant hostas in almost any l
t situation. Gen
, blue hostas pre
e
de and the gold and yel
-colored varieties tol
te and rece
their b
colo
g from
e sun. If you have dense
de, you m
t want
e variegated ones to help br
ten the a
s.
Preg a well-drained location, hostas gen
need
e water than the rain provides in an av
ge year. This is true especia
if growing under t
s which take up much
l mois
e. Plants in ideal growth conditi
rece
1-1/2" per week. Over the c
se of a season that is 3/4" every 3 to 4 days. Hostas need this extra water du
g the growing season, but not in winter when they are dormant. Too much water in winter can contribute to crown or root rot.
Hostas need room and about two seas to grow and achieve their full potential. When planting, sp
the small-leaved hostas betw
18" and 24" apart and the large-leaved ones 24" to 30" apart. Sp
them appropriately to al
room for growth since hostas do b
when left undis
bed for sev
l years.
After they are planted, y hostas will require little care. Attent
wate
g and well-drained
l are musts, and a layer of mulch (no
e than 2-3") will prevent competition from weeds. Annual feeding with s
-release
tilizer will keep y
hostas happy. With so many dif
ent opti
in
tilizer, the thing to do is to take a
l sample to y
local Coop
t
Extension Office for t
ing and
tilize according to recommendati
.
Pl y
hostas in
l that is loose and well-drained in a
dy spot that is protected from hot afternoon sun. Amend the
l with organic matter or compost. Add a s
-release
tilizer to the
l. Pl
the hosta in the hole so that the clump is level with the
l surf
, and water tho
ghly. You can plant them any time du
g the growing season, but the later in the season you plant, the
e important it is to keep them
quately watered. Cutting off the f
er scape as soon as possible after blooming tends to inc
se the probability of re-bloom.
Hostas do not need regular dividing to keep them vigor. They can be left undis
bed indefinitely, but when dividing is necessary, do so in the sp
g just after the plant pips are emerging from the g
nd so the new foliage is not damaged. If the plants are left undivided, you can enjoy their ma
e beauty sooner.
Hostas are virtua disease-f
. Major p
s include slugs and snails, deer, cut-worms and leaf beetles. Slugs chew holes in the hosta leaves and make them uns
tly. There are books about slug control methods including: picking them off one by one, leaving out beer-filled trays in the hopes the slugs drown, copper
gs, squashing them betw
bricks, p
icides, and my favorite, diatom
earth. It is a powder of the finely g
nd shells of diatoms. Diatoms are microscopic sea c
es. When sp
kled on the g
nd, the slugs crawl over the powder, cutting themselves all to pieces, then they die of dehydration.
Deer love hostas. Apart from keeping a dog present in the affected a, there is no single cure for deer. Previ
ly successful methods of repellent, such as leaving bags of human hair a
nd, are no longer effect
because urban deer have become comfortable co-existing with humans. A varied program with sev
l components will be
e effect
than a single prevent
method. Contact local nurseries for information on deer repellent products currently on the market. Rabbits and squirrels may chew an occasional leaf, but are not gen
known to be problems for hostas.
Cut-worms and leaf beetles can cause e damage than slugs. Cut-worms l
in the g
nd and feed at n
t by crawling up the plant and eating holes th
gh the unopened leaves. Leaf beetles will eat holes in the center of the leaves betw
the veins. Sometimes this can be confused with slug damage. A na
al control is the h
e wren. They have a tremend
appetite for those p
s and for slugs. If you're not k
on birdh
es, you can fall back on commercia
available p
icides. Always carefu
fol
label instructi
and heed warnings.
Now that you're an expert on hostas, how do you pick the rt ones? Think about the sp
you have available and the amount of the sunl
t the plant will rece
in y
garden. Those are determining factors.
Here are a few varieties to cider:
x'Sum and Substance' - A striking hosta with large, leathery, neutral-gn leaves. It has b
called "the bigg
and most popular hosta in the world." It grows to 3' tall and 5-6' across.
x'Blue Angel' - The larg and most dramatic-looking of all hostas, 'Blue Angel' has deep blue-g
n leaves and can grow into a mount 30" tall and 6' wide.
x'Emily Dickenson' - Deep gn glossy leaves with c
my white margins, a neat, compact, mounded habit, and deep lavender f
ers make this a welcome plant in any garden. It grows to 20" tall and 26" wide.
x'Praying Hands' - The most unusual hosta to appear. The plant has extremely narrow, curled, ckled and furrowed g
n-and-white leaves that some believe resemble hands folded in prayer. It forms clumps about 18" wide and in late summer bears 18" tall spikes of l
t-lavender f
ers.
x'June' - Heavy leaves with blue-gn margins, gold centers with g
n striati
within the gold, and br
t color in the
de. It grows to 15" tall and 15" wide. Bears very fragrant violet f
ers from July to August.
Ready for a caref, lush plant to cover y
problem
de a
s or to provide a sense of calm to y
garden? You're
dy for a hosta.
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