Have you ever visited a botanical garden on a warm spring day and marveled at tulips in a rainbow of colors, with shapes ranging from cups to stars, contrasting striations, and ruffled edges?Now’s your chance to bring a taste of that awes
12.06.2023 - 00:58 / gardenerspath.com / Nan Schiller
Recognizing, Managing, and Preventing Rust on Canna PlantsThe Canna genus is the only genus belonging to the Cannaceae family of plants. It contains over 30 species.
Often called canna lilies, they are neither lilies nor lily relatives, but share the same monocot structure – petals in multiples of three are one characteristic of this form.
And while they are often called bulb flowers, they are not actually true bulbs, but flattened, fleshy rhizomes.
Suited to gardens in USDA Hardiness Zones 7 to 10, canna is an herbaceous tropical perennial native to South America.
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It thrives in a full sun location with organically-rich, well-draining soil that is slightly acidic – with an ideal pH of 6.5. In other zones, it is grown as an annual.
Species have showy flowers in shades of red, orange, pink, white, and multicolor combinations.
Mature heights range from a petite 18 inches to a towering eight feet tall. Leaves are broad and paddle-like, and may be solid or striped, and bright green, purple-green, or bronze in color.
Sometimes, canna falls victim to a fungal condition called rust.
In this article, we discuss how to recognize, manage, and prevent canna rust.
Let’s begin by defining the condition.
What Is Rust?Rust is a type of plant disease spread by fungal spores through air, and sometimes by water.
The fungus feeds on live plant tissue, and the disease gets its name from the powdery red-brown coating it leaves on your fingers when you brush them across an affected leaf.
Different types of rust have different preferred host plants.
A type likely to affect canna plants is borne by a fungal parasite called Puccinia thaliae,
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