PLANT PHENOLOGY REPORT
Department of Horticulture
Oregon State University
Corvallis, Oregon
March 4, 2009
| Phenospecies | Date of 1st bloom | Season deviation* |
| Single Snow Drop (Galanthus nivalis) | 2- 8 | - 6 |
| Spriraea arguta | 2-15 | -28 |
| Crocus chrsanthus | 2-16 | -14 |
| Japanese quince (Chaenomeles lagenaria) | 2-21 | - 1 |
| Red maple (Acer rubrum) | 2-24 | - 8 |
| Yellow forsythia (Forsythia intermedia) | 3- 1 | - 8 |
| Cornelian dogwood (Cornus mas) | 3- 3 | - 3 |
*-6 = 6 days later than average; +6 = 6 days early, etc.
Notes:
The spring season is cold, but not as cold as last year. The wide variation in bloom this year is partly due to temperature variation. Another possible cause of vaiation is that dark-colored buds are warmed more by periods of direct sun than those lighter colors. On cloudy, overcast days all buds will be the same temperature.
Mel Westwood
Professor Emeritus
Quote for the Month:
When you get to the end of your rope, tie a knot and hang on. F.D.R.
Previous Reports
- March 2009
- February 2009
- June 2008
- May 2008
- April 2008
- March 2008
- February 2008
- June 2007
- April 2007
- March 2007
- February 2007
- June 2006
- May 2006
- March 2006
- February 2006
- June 2005
- May 2005
- April 2005
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- May 2004
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- March 2004
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- July 2003
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- March 2003
- May 2000
- April 2000
- March 2000