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September Bloom Times
Below is a list of plants that began to bloom in my garden in Seattle in September 2011. I recorded the date when the 1st flower opened, not when they were in bud. I think this information is helpful in planning your garden. If you have room for more plants that bloom in August, you can choose something new that will bloom with something you have, or you can fill temporal gaps between blooms. Nurseries in Seattle usually sell plants when they are in bloom. I have included dates from previous years. Weather conditions probably account for most of the difference in bloom times. September 2011 was warmer & drier than normal. The average monthly maximum temperature was 73.5F/23C. The normal average monthly maximum temperature is 70.5F/21.4C. The highest temperature was 85F/29.4C, the lowest 46F/7.8C. We had 1.29 inches of rain, 0.21 less than normal. It rained on 11 days. There were 11 cloudy days, 10 partly cloudy days & 11 sunny days.
09-02-11 Sedum 'Autumn Joy'
09-03-11 Cyclamen hederifolium 9-10-10, 9-01-08
09-05-11 Eryngium amethystinum 9-03-10
09-26-11 Arbutus unedo 9-28-10, 9-20-08
09-26-11 Asternovae-angliae 'Hella Lacy' 9-28-10, 9-29-08