Deadheading guide
How to deadhead agastache 'black adder'
How to deadhead agastache 'black adder'
Follow the spent bloom down to the first set of healthy leaves or a visible side bud, and cut just above it. Cutting only the petals off leaves the developing seedpod behind, which defeats the point.
The mistake to avoid
Snipping just the faded petals and leaving the swollen green seedpod below. The plant still thinks it has set seed, so agastache 'black adder' slows down anyway.
More agastache 'black adder' care
Deadheading agastache 'black adder' — FAQ
Should I deadhead agastache 'black adder'?
Deadheading agastache 'black adder' genuinely pays off. Once a flower fades the plant starts pouring energy into setting seed, and removing it redirects that energy straight back into producing more buds. Keep on top of it through the season and you get a noticeably longer, heavier display; stop, and flowering tails off as the plant decides its job is done.
How do you deadhead agastache 'black adder'?
Follow the spent bloom down to the first set of healthy leaves or a visible side bud, and cut just above it. Cutting only the petals off leaves the developing seedpod behind, which defeats the point.
How often should I deadhead agastache 'black adder'?
Every few days to weekly through the flowering season — the more regularly, the better the repeat.
What is the most common deadheading mistake with agastache 'black adder'?
Snipping just the faded petals and leaving the swollen green seedpod below. The plant still thinks it has set seed, so agastache 'black adder' slows down anyway.