Geum Totally Tangerine
I have a few Totally Tangerine geums in a sunny, dry sandy bed. Despite being recommended for moist conditions, they thrive and look beautiful in May, but come June they sprawl and are more horizontal than vertical. Is this something to do with the dry conditions? I deadhead them regularly but wonder if I should cut them right back, despite the stalks having unopened flowers, in the hope of getting a new flush of upright stems.
I'm not sure they'd look right with a plant support - maybe I should grow them through something else? Thoughts please?