- Full Sun (At Least 6 Hours Of Direct Sunlight)
- Mature Height 2 - 3 Feet
- Mature Spread 2 - 3 Feet
- Growing Zones 6 - 9
There is so much going for the Black Adder Giant Hyssop that it is hard to know where to start. Also known as Agastache 'Black Adder', this giant hyssop produces tall red-violet flower spikes from June until the fall. Furthermore, aromatic foliage that smells of aniseed accompanies the almost-black buds before they bloom. Black Adder grows to around 2 to 3 feet tall and provides interest for months.
A serious pollinator magnet, the Black Adder Giant Hyssop is perfect for drawing in wildlife. It is deer resistant and suited to growing in zones 6 to 9. This perennial is perfect for a variety of garden uses, including dry gardens, wildlife areas, cottage schemes and mixed borders. Black Adder is drought and heat tolerant once established.
Black Adder Giant Hyssop Care
The Black Adder Giant Hyssop requires full sun to thrive. It can cope with most soil types and pH levels as long as the drainage is good. Water for the first season to help it establish. Thereafter, Black Adder can tolerate dry spells and does not need much supplemental water. Fertilization is not generally required. However, to give it a boost, you can mulch it in the spring with a layer of organic matter.
Cut back spent flower stems to just above ground level in early spring. As winter approaches, you can shorten the stems to prevent potential wind damage.
Black Adder Giant Hyssop Spacing
Over time, the Black Adder Giant Hyssop can grow to 2 to 3 feet tall by 1 to 2 feet wide. A spacing of 18 to 24 inches is suitable when planting out in a group.
Black Adder Giant Hyssop Information
| USDA Hardiness Zones: 6 - 9 |
| Plant Type: |
| Light Exposure: Full Sun (At Least 6 Hours Of Direct Sunlight) |
| Mature Height: 2 - 3 Feet |
| Mature Spread: 2 - 3 Feet |
| Spacing: 18 - 24 Inches |
| Habit: Clumping, Upright |
| Flower Color(s): Purple, Red |
| Flower Description: Purple and Red Shades |
| Bloom Period: Summer |
| Foliage Type: Herbaceous |
| Foliage Color(s): Blue, Green |
| Foliage Description: Blue and Green Shades |
| Seasonal Interest: Summer Flowering |
| Watering: Average |
| Resists: Deer |
| Tolerates: N/A |
| Attracts: N/A |
| Container Role: |
| Uses: Borders, Sensory Gardens, Wildlife Gardens |
| Features: Cut Flowers, Fragrant |
| Brand: |
| Common Name: Black Adder Giant Hyssop |
| Other Name(s): Hyssop, Hummingbird Mint, Anise Hyssop |
| Scientific Name: Agastache 'Black Adder' |
- SKU:
- 1020693-pc
Container Sizes
Please Note: The pictures below are to give a general representation of the different container sizes. The actual size/ages of plants are estimates and will vary based on; type of plant, time of year, last pruning & many other factors.
4.5" Pot
Also Known As:
4.5" Container
Plant Age:
~ 6 months
Plant Size:
~ 3"-6"
Pot Size:
~ 4.5"H x 3.75"W
Volume:
1.42 quarts
Quart Pot
Also Known As:
Quart
Plant Age:
~ 6 months - 1 year
Plant Size:
~ 4"-8"
Pot Size:
~ 4.75"H x 4.5"W
Volume:
1.50 quarts
2.5 Quart
Also Known As:
2.5 Quart Pot
Plant Age:
~ 1 - 2 years old
Plant Size:
~ 8"-12"
Pot Size:
~ 6.5"H x 6.5"W
Volume:
2.20-2.30 quarts
#1 Pot
Also Known As:
#1 Container
1 Gallon
Plant Age:
~ 1 - 2 years old
Plant Size:
~ 10"-14"
Pot Size:
~ 7"H x 7.75"W
Volume:
2.26-3.73 quarts
#2 Pot
Also Known As:
#2 Container
2 Gallon
Plant Age:
~ 1.5 - 3 years old
Plant Size:
~ 12"-18"
Pot Size:
~ 9.5"H x 9.5"W
Volume:
1.19-1.76 gallons
#3 Pot
Also Known As:
#3 Container
3 Gallon
Plant Age:
~ 2 - 4 years old
Plant Size:
~ 12"-30"
Pot Size:
~9.5"H x 11"W
Volume:
2.32-2.76 gallons
For more detailed information, please click here.
Plant Addicts Guarantee (Included On All Plant Orders)
Plant Addicts always guarantees your plant(s) will arrive happy & healthy. However, plant(s) are being shipped through the mail & sometimes accidents happen. If the plant is dead, has dried out roots or the incorrect item was shipped, just notify Plant Addicts within 3 days upon delivery. We may ask for pictures but will try to make it as easy as possible for you. Please note, plant(s) with damaged branches or wilted leaves will not qualify for this guarantee. Plants are very resilient and will rebound quickly when cared for correctly.
For more information on how to care for your new plants, please click on our guide below.
Guide: How to Care for Your New Plant(s)
Plant Addicts Warranty - 1 Year (Extra Purchase Required)
We encourage all plant lovers to purchase the Plant Addicts Warranty, whether you're a new gardener or an expert. There are many variables outside of anyone's control that can cause a plant to die. Hungry animals, drought, poor soil conditions, over watering, diseases & pests are all good examples of what can cause plants to die. The Plant Addicts Warranty is a 1 year warranty protecting you from all of the unknowns and will replace your plant if something were to happen to it.
The warranty is purchased on a per plant basis and must be purchased at the same time as the plant(s). We will cover 100% of the price of the plant, but the warranty does not cover shipping costs. SImply let us know if your plant has died within 1 year of receiving it and we will get you a new one shipped out as soon as possible (depending on the time of the year and availability). We may ask for photos for documentation purposes, but we try to make the process as easy as possible.
For more information, please click on our page below.
Plant Shipping
Below are some factors we consider when determining when to ship the plants depending on the timing of the order.
Winter to Early Spring
We ship only when it's warm enough to plant in your growing zone.
Sometimes plants aren't completely ready to sell and ship in early spring. We will wait until the plants are ready before shipping so you don't get a subpar product.
For Southern plants we will be able to ship much earlier than plants coming from our northern nursery.
Summer
If there is extreme heat we may delay shipping for a week or several weeks.
We review what areas the plants are traveling through as well as your location.
Fall into Winter
We’ll ship plants out all the way up to the end of the fall planting season!
Winter
Get your order in early to reserve your plants for Spring planting!
Once your plant is shipped you’ll receive an automated email with tracking information.
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Planter Shipping
Standard Colors: 2-3 business days
Special Order Colors: 8 weeks - this is due to the planter being custom made with the color(s) of your choice
Please Note: On special orders there can not be any cancellations