An upright, bushy perennial with whorls of long lasting deep violet blue flowers over ultra green scented foliage. Flowers from July to October. Height 60cm. Full sun. Hardy. Attracts bees and butterflies.
Agastache ‘Blue Boa’ is a striking, bushy perennial known for its deep violet-blue flower spikes and aromatic green foliage. Blooming from July to October, this hardy plant is a magnet for bees and butterflies, making it an ideal choice for pollinator-friendly gardens.
PLANTING and AFTERCARE GUIDE
Best Planting Time
Spring: The best time to plant Agastache ‘Blue Boa’ is in early spring. By planting when the soil begins to warm, you give the plant plenty of time to establish its root system before the peak growing season.
Autumn: You can also plant Agastache in early autumn, allowing the plant to settle and develop before entering dormancy. This helps ensure robust growth and flowering the following year.
Site Selection
Sunlight: Agastache ‘Blue Boa’ thrives in full sunlight. To encourage the most vibrant blooms, select a location that offers at least 6-8 hours of direct sun each day. Full sun exposure will result in more prolific flowering and healthier foliage.
Soil: Well-drained soil is essential for Agastache ‘Blue Boa’. It does not tolerate waterlogged conditions, so avoid low-lying areas where water may pool. While it is adaptable to a variety of soil types, ensure the soil has good drainage to prevent root rot and maintain healthy growth.
Planting Instructions
Preparing the Hole: Dig a hole that is twice as wide as the root ball and the same depth. This allows the roots of the plant to spread freely and establish themselves quickly.
Soil Preparation: Mix in compost or well-rotted organic material to improve the soil’s texture and fertility. This will provide the plant with the nutrients it needs to thrive.
Planting: Place your Agastache in the hole, ensuring the top of the root ball is level with the surrounding soil. Backfill the hole with soil, gently firming it down to eliminate any air pockets.
Watering After Planting: Water thoroughly after planting to help the soil settle around the roots. This initial watering helps the plant begin the process of root establishment.
Watering Requirements
Growing Season: Once established, Agastache ‘Blue Boa’ is quite drought-tolerant. Water moderately during extended dry periods, ensuring the soil dries out between watering sessions. Overwatering should be avoided, as this can lead to root rot.
Dormant Season: Reduce watering during the dormant season. Agastache requires minimal moisture in the colder months, so only water if the soil becomes extremely dry.
Feeding
Spring: In early spring, apply a balanced, slow-release fertiliser to Agastache ‘Blue Boa’ to support healthy growth and abundant flowering throughout the season.
Mid-Summer: A light feeding in mid-summer can boost the plant’s energy and encourage continuous blooming into autumn.
Pruning
Deadheading: Regularly remove spent flowers from your Agastache to promote new blooms and extend the flowering period. Deadheading also helps maintain the plant’s tidy appearance.
Autumn Pruning: Once flowering has finished for the year, cut back Agastache ‘Blue Boa’ to ground level. This prepares the plant for dormancy and ensures a clean garden space through winter.
Mulching
Spring: In spring, apply a layer of organic mulch around the base of the plant. Mulching helps retain moisture, suppress weeds, and regulate soil temperature, creating an ideal environment for growth.
Winter: During winter, mulching can protect the plant’s roots from fluctuating temperatures and improve soil stability. This is particularly helpful in colder regions.
Supporting the Plant
Staking: Agastache ‘Blue Boa’ generally has strong, upright stems, but in areas with strong winds, it may benefit from staking. Install stakes early in the season to avoid disturbing the roots later on.
Agastache ‘Blue Boa’ is a low-maintenance, pollinator-attracting perennial that adds vibrant colour and fragrant foliage to any garden. Its deep violet-blue flowers create a stunning display from mid-summer to autumn, making it an excellent addition to mixed borders, containers, or cottage gardens. With proper planting, watering, and care, Agastache ‘Blue Boa’ will thrive and provide a long-lasting splash of colour. This plant’s drought tolerance, combined with its hardiness, ensures that Agastache ‘Blue Boa’ is a standout feature in any garden design.
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