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Agastache 'Astello Indigo'
Agastache 'Astello Indigo' Seeds
If you love blue flowers you will adore these Gold Medal winning plants. As the name suggests Agastache 'Astello Indigo' has masses of long lasting deep indigo blue flowers and attractive deep green aromatic foliage.
Each flower spike is made up of many tiny tubular flowers which are full of nectar that bees, butterflies and other pollinating insects find irrististible. Excellent in the garden and good for containers too. Agastache is also good for cutting… add them to mixed bunches of flowers to create a lovely contemporary look.
Strictly speaking Agastache is a Tender Perennial plant but you can also treat it like an Annual. Sow indoors in spring and sow direct from May onwards when the soil has warmed up. Agastache flowers from mid summer onwards and will keep going long into autumn. You may know Agastache as Giant Hyssop or the Hummingbird Mint. Although it won't attract Hummingbirds here in the UK you may be pleased to know that it won't attract Deer either! It's Deer resistant.
| Genus | Agastache |
| Variety | Astello Indigo |
| Plant Type | Tender Perennial. (Treat as an Annual) Cut Flower.
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| Height & Spread | 50-60cm / 20-24 inches tall x 30cm/1 foot wide |
| Sow Seeds | Sow indoors in February, March or April. Seeds need light to germinate so do not cover. Grow on then plant out and sow direct from May onwards. Takes 15 -16 weeks from seed to flower from a spring sowing. |
| Thin/Plant Out | Thin or Plant out 30cm/1 foot apart after the last frosts when the soil has warmed up in May. |
| Conditions Required | Prefers moist but well drained soil in full sun. Agastache is a fast growing branched perennial and does not need support. |
| Flower Production | Flowers from July to October. Keep cutting the blooms and your plants will keep producing flowers well into autumn. |
| Picking | Pick in the early morning or cool evening. Sear stem ends in boiling water for 15 seconds and stand flowers in a tall bucket of water for a good drink before arranging. Agastache flowers last 7 days in a vase. |
| Planting Combinations | Agastache grows well with other perennials such as Achillea and Lychnis and is particularly lovely with Grasses. Lovely with blue annual flowers such as Salvia viridis 'Oxford Blue', Centaurea 'Double Blue' and whites like Ammi majus, White Corncockle and Cosmos 'Purity'. |