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Fall bulbs should be planted as soon as the ground is cool usually, when the evening temperatures are constant between 40 to 50 degrees. Some gardeners plant as late as January.
However, they may fall victim to canna rust, a fungal disease resulting in orange spots on the plant's leaves, caused by over-moist soil. They are also susceptible to certain plant viruses , some of which are Canna -specific , which may result in spotted or streaked leaves, in a mild form, but can finally result in stunted growth and twisted ...
That means in zones 7 to 10, you'll need to buy “pre-chilled” bulbs or chill them yourself in the fridge for 6 to 12 weeks before planting. Plant your fall bulbs as soon as possible after ...
Plant these in the fall before the ground freezes. “They need to be considered a long-term investment as it's best to wait 3 years before cutting any blooms from these plants,” she says.
The bulbs are produced to satisfy the demand for bulbs for parks, gardens and as house plants, in addition to providing the bulbs necessary for the production of cut flowers. The international trade in cut flowers has a worldwide value of approximately 11,000 million Euros, which gives an idea of the economic importance of this activity.
Flowering plant bulbs are planted beneath the surface of the earth. The bulbs need some exposure to cold temperatures for 12 to 14 weeks in order to bloom. [1] Flower bulbs are generally planted in the fall in colder climates. The bulbs go dormant in the winter but they continue to absorb water and nutrients from the soil and they develop roots ...
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Puccinia thaliae is the causal agent of canna rust, a fungal disease of Canna. Symptoms include yellow to tan spots on the plant's leaves and stems. Initial disease symptoms will result in scattered sori (clustered sporangia), eventually covering the entirety of the leaf with coalescing postulates.
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