Availability : In Stock

Summerlong Lemon Agastache

Proven Selections

Availability : Pre-Order
Availability : In Stock
$29.99

Summerlong™ Lemon Agastache (Agastache mexicana ‘Balsumlem’) offers bold yellow flower spikes that emerge in late spring and keep going through summer. These bright, trumpet-shaped blooms are a pleasing sight for both gardeners and pollinators. Reaching 16 to 22 inches tall and wide, this perennial's mounded form works well in tight spaces or grouped to create a lively border. Hummingbirds and bees visit regularly. If you want a long-blooming plant for sunny conditions, this perennial is the perfect candidate.

Native to warmer regions of North America, Summerlong™ Lemon Agastache handles high temperatures and drier soil once established. It resists drought, wards off deer, and lures beneficial insects, including buzzing bees. The lemon-hued blooms and slender leaves also carry a gentle fragrance, further enhancing its ornamental appeal. Whether massed in a landscape, arranged in containers, or accenting a mixed perennial bed, Summerlong™ Lemon Agastache fits right in. With minimal demands, it thrives in various garden scenarios.

Summerlong™ Lemon Agastache Care

Use well-drained soil in a spot that receives at least six hours of sunlight daily. Water regularly for the first few weeks to help roots get established; after that, moderate or low watering is enough. A single application of balanced fertilizer in spring is usually fine—too much feeding can lead to lanky growth. Mildly acidic to neutral soil suits this plant’s needs, and adding organic matter can boost its performance. In cooler climates where temperatures dip below 15°F, consider using it as a container plant you can shelter indoors or in a protected area for the winter.

Remove spent flower spikes as they fade to encourage new rounds of blooms. Light pinching in early summer can promote a bushier habit if desired. Shearing back the plant by a few inches helps maintain tidiness and potentially spurs continued flowering. For container-grown specimens, trim lightly whenever foliage becomes overgrown or straggly. Some gardeners also perform a deeper cutback in late fall if the plant is kept outdoors year-round.

Summerlong™ Lemon Agastache Spacing

Place these perennials about 14 to 16 inches apart if creating a row or mass planting in a border. A container of roughly 12 inches in diameter is big enough to house a single plant comfortably, allowing room for root growth and easy access to water.

SKU:
SLASUMMERR-GC

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.

Quart Pot

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

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

#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

#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

#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

#5 Pot

#5 Pot

Also Known As:
#5 Container
5 Gallon

Plant Age:
~3-4 years old

Plant Size:
~ 20" - 60"

Pot Size:
~11" H x 10 1/2” W

Volume:
3.5 - 4 gallons

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Plant Shipping

Pre-Ordered Plants

Pre-ordered plants are scheduled to ship in Spring 2025. We carefully plan our shipping dates based on your USDA Plant Hardiness Zone to ensure optimal planting conditions upon arrival. Want it sooner/later? Reach out, and we'll try our best to accommodate.

Estimated Spring Shipping Schedule

Estimated ship week for pre-ordered plants will ship based on growing zones as shown below.

Growing Zone Estimated Ship Week
Zone 10March 24th
Zone 9March 31st
Zone 8April 7th
Zone 7April 14th
Zone 6bApril 21st
Zone 6aApril 28th
Zone 5bMay 5th
Zone 5aMay 12th
Zone 4May 19th
Zone 3May 26th

Note: These are only estimated ship dates. Plants may ship out later depending on weather & growing conditions of the plant.

Note: Only plants indicated as pre-order will ship as shown above. All other plants and hard goods will ship as normal.

Plants Shipping Now

Plants that are currently in stock typically ship within 2-7 business days after your order is placed.