Posted: 29/08/2016 at 13:01
For a sense of perspective, balance and sheer common sense, Blue Boa is a fantastic summer-long flowering bee and butterfly attracting plant. Looks good for months. It is not meant to provide a show over winter folks. With so many people trying to grow Blue Boa, and apparently failing, it clearly has appeal but people have to be realistic.
Blue Boa survives here over winter but I replace most of them every year simply because, like bonariensis for example, they are better as first year plants. from cuttings in summer to early autumn they become eye catching low maintenance 80 to 100 cm plants for fhe summer...so what if they do not survive winter? We are gardeners...we propagate! Better than many summer annuals for the sake of a few cuttings??
There are other tender agastaches here with orange, yellow, pink, red and purple flowers all with differently scented foliage from liquorice, to lemon, to mint etc., and all still flowering since June. From 30 cm domes to 180 cm tall guys. A superb family to grow but cuttings are essential. No reason not to grow them.
Many have complained about cosmos not flowering or only just flowering this year well agastaches will outperform them . I grow cosmos too but if I had to choose I would always select agastaches
they must be in free draining soil, in tbe sun and watered only in the hottest driest times in summer.
Last edited: 29 August 2016 13:03:49