Difference between revisions of "Aster (genus)"
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===Pests and diseases=== | ===Pests and diseases=== | ||
| + | |||
| + | The two main diseases which infect asters are ''rust'' and ''powdery mildew'', both of which can be avoided by: | ||
| + | *making sure plants are well-spaced to allow for good air circulation; and | ||
| + | *watering plants at the roots so as to avoid the foliage becoming excessively wet. | ||
| + | |||
| + | |||
| + | ''Rust'' can be easily identified by the orange pustules which form on the underside of the leaves. | ||
| + | |||
| + | ''Powdery Mildew'' appears like a white sooty residue on the upper-side of the leaves, quickly causing defoliation. | ||
==Species== | ==Species== | ||
Revision as of 13:03, 20 December 2009
| Lifespan: | ⌛ | perennial |
|---|
Cultivation
| Aster calendar? | ||
|---|---|---|
| January: | ||
| February: | sow | |
| March: | sow | |
| April: | divide | |
| May: | transplant | |
| June: | ||
| July: | flowering | |
| August: | flowering | |
| September: | flowering | |
| October: | divide | |
| November: | ||
| December: | ||
| Notes: | ||
Propagation
- Division - Divide clumps every two years as growth starts in the spring. Select strong crowns from around the outside of the existing clump and discard the weak central section.
- Seed - Sow either in spring or autumn in a cold frame.
- Cuttings - Take 2 inch long softwood cuttings in spring, use a sandy compost mix, and place in a cold frame to root.
Pests and diseases
The two main diseases which infect asters are rust and powdery mildew, both of which can be avoided by:
- making sure plants are well-spaced to allow for good air circulation; and
- watering plants at the roots so as to avoid the foliage becoming excessively wet.
Rust can be easily identified by the orange pustules which form on the underside of the leaves.
Powdery Mildew appears like a white sooty residue on the upper-side of the leaves, quickly causing defoliation.
Species
- Aster alpinus (Alpine Aster)
- Aster amellus (European Michaelmas Daisy or Italian Aster)
- Aster linosyris (Goldilocks Aster)
- Aster pringlei
- Aster scaber
- Aster sibiricus
- Aster subulatus (Hairless Fleabane)
- Aster tataricus (Tatarian Aster)
- Aster tongolensis
- Aster tripolium (Sea Aster)
Gallery
For plants with a lot of photos - a gallery can be added below, otherwise remove this section!
References
- w:Aster (genus). Some of the material on this page may be from Wikipedia, under the Creative Commons license.
- Aster (genus) QR Code (Size 50, 100, 200, 500)
- Flora: The Gardener's Bible, by Sean Hogan. Global Book Publishing, 2003. ISBN 0881926248
- American Horticultural Society: A-Z Encyclopedia of Garden Plants, by Christopher Brickell, Judith D. Zuk. 1996. ISBN 0789419432
- Sunset National Garden Book. Sunset Books, Inc., 1997. ISBN 0376038608
