Light/Watering
: Full sun. Some afternoon shade will protect the leaf color of yellow-foliaged Agastaches. Fertilizer/Soil and pH: Average garden soil that drains well. Do not fertilize the first spring after planting; in subsequent years fertilize once in early spring with 10-10-10 or a layer of well-rotted compost.
How do you deadhead in Agastache?
How to prune Agastache is just as important as when to prune it. Always use sanitized pruning shears or loppers that are nice and sharp. To deadhead anise hyssop,
simply cut off the dead flowering stems
. If you wish to force new growth and shape the plant, cut back up to 1/3 of the woody material.
Should Agastache be cut back?
Trimming & Pruning: Trim back Agastache plants by
pinching
the new growth in spring to promote bushier growth. Deadhead (trim) spent flower stalks to keep the plant tidy. If growing Agastache as a perennial, don't prune or deadhead past midsummer.
How do you winterize Agastache?
WINTERIZING
Leave old flower heads on the plant
and let them go to seed. In early spring, gradually remove any winter cover. Cut back old stems all the way to the ground; large clumps may be divided. DIVIDING/TRANSPLANTING Divide in spring if plant has outgrown its space; plant crown at soil level.
How do you look after Agastache?
They thrive in
full sun in fertile soil
and especially prepared soil with added leaf mould, compost or dung. Powdery mildew can affect the leaves but this is usually only after warm wet periods and usually only after the plants have more or less finished flowering so it is seldom much to worry about.
Does Agastache spread?
The upright, clump-forming plants generally grow 2-4 feet tall and about 1-3 feet wide from a small tap root with
spreading rhizomes
. They have opposite leaves on the square stems (characteristic of the mint plant family).
What goes well with Agastache?
COMPANION & UNDERSTUDY PLANTS: Agastache foeniculum mingles nicely with
Callirhoe involucrata
, Echinacea purpurea, Rudbeckia fulgida var. fulgida or Solidago nemoralis. Blue tinged grasses like Panicum virgatum ‘Prairie Sky' and Schizachyrium scoparium ‘The Blues' provide a nice contrast.
When should I cut back Agastache?
Herbaceous plants do best if trimmed back in
early spring just as new growth is about to appear
. Anise hyssop can also be deadheaded and shaped lightly from spring until mid-summer. Suspend any trimming thereafter, as it may force tender new growth that can be damaged when cool weather appears.
Is Agastache invasive?
Easily grown in average, dry to medium, well-drained soils in full sun. Tolerates light shade but best in full sun. Also tolerates drought, poor soils, summer heat and humidity. Plants in this
genus are non-invasive in the garden
.
Are Agastache Hardy?
Agastache
tolerates summer drought
better than many other flowers. Popular cultivars like ‘Blue Fortune' are hardy to -15C (5F ) when well established.
Can you grow Agastache in pots?
Agastache grows
surprisingly well in containers
, as it prefers well-draining soil.
Is anise hyssop invasive?
Anise Hyssop is not invasive
, but will spread by self-seeding locally. I've been growing Anise Hyssop for several years. I've had my plants expand in size and self-seed, but I've not had them spread via rhizomes.
Is agastache a good cut flower?
Agastache Uses
They can be used in container gardens or in cut flower gardens, as the
Agastache flowers are long lasting
. Growing Agastache in the butterfly garden not only attracts those beautiful insects, but pollinators and hummingbirds.
Is agastache drought tolerant?
Agastache. You can rely on agastache to cover itself in blooms throughout the summer and autumn. … This
drought-resistant outdoor plant
attracts tons of hummingbirds and makes a pretty cut flower, too.
What soil does agastache like?
Agastache are best planted in a
moist but well-drained soil of sand, chalk or loam within
an acidic, alkaline or neutral PH balance. They are drought tolerant plants and are best positioned in an area of full sun.
