Yellowing delphinium leaves

Last week I bought a large and very vigorous-looking delphinium. The pot ‘s diameter and depth are both 85 cm. / 8.5 inches. It’s about to bloom in a burgundy colour. The leaves are strong with a dark green colour.…

How long do delphiniums live in Toronto?

I heard delphiniums are challenging plants to grow and I am a little put off by the suggestion that they might not last longer than 2-3 years. How long do they usually live in Toronto?…