Leaf spot is a common fungal disease on black-eyed susans this time of year, but it's too late to do much about it now. Fungicides can head off the problem when applied at the first sign of ...

My black-eyed Susans have roundish spots on the leaves. How can I prevent this? Septoria is one of several fungal leaf spot disease possibilities. It appears as roundish spots with a lighter gray c… ...

A: That's probably septoria leaf spot - the main Achilles heel of black-eyed susans. It's a fungal leaf disease similar to black spot on roses, but the trouble-making organism (Septoria rudbeckiae ...

I have two bunches of black-eyed Susans (rudbeckia) that are developing black spot on their leaves, much like black spot you would find on the leaves of roses. I had ...

The oppressive heat and lack of rain in recent weeks has left much of the garden looking dispirited, but the black-eyed Susans — just coming into flower — validate the phrase "fresh as a daisy ...

A: Rudbeckia species, commonly called black-eyed Susans, are prone to several diseases that can cause leaf spots including angular leaf spot (bacterial), Septoria leaf spot (fungal) and powdery ...

It has the classic black-eyed Susan flower, and the entire plant is attractively dome shaped. Most notable is the ability of “American Gold Rush” to resist Septoria leaf spot.

With a long-lasting and distinctive bloom, along with a catchy name that memorably describes the blossom, black-eyed Susans are one of the easier landscape plants to identify. Even novice gardeners ...

Most gardeners are well acquainted with the charms of rudbeckias, better known as black-eyed Susans. They feature yellow, gold and chocolate tones, making them a perfect addition to a summer and ...

The Black-eyed Susan vine, an African native, is a perennial vine in frost-free locations but is commonly grown as an annual in colder climates. In our mild Southern California climate, it is like… ...