What a cracker this lovely peony is and a one-off too - it is a hybrid between traditional perennial varieties and the tougher tree paeony, combining beauty, colour and robustness in one.
'Bartzella' produces beautiful lemon-yellow flowers with frilly, ruffled centres and unique magenta streaks at the petal base. It has deep green foliage that acts as the perfect backdrop for the giant flowers it holds, and habit-wise it will form a neat mound, topped by a succession of giant flowers in April and May, and even into June.
What's more, the blooms carry a wonderful lemon citrus scent which is a joy on those sunny spring days.
Each autumn 'Bartzella' dies down underground, only to emerge bigger and more floriferous the following year. Perfect in mixed borders in sun or light shade, avoid growing in pots.