long lasting flowers?

Diane Whitehead voltaire@islandnet.com
Tue, 04 Aug 2009 19:49:32 PDT
This year, for the first time ever, I am growing zinnias.  I bought a  
packet of Granny's Bouquet from Renee's Garden.

I think I will start keeping track of how long each flower lasts.   
There is a shaggy orange one that was flowering beside a different  
kind of plant  that has stopped flowering, and Shaggy still looks  
great.  I don't mean that this zinnia plant is still flowering  with  
new flowers.  It is the same original flower that has been blooming  
over a week.

It has made me think of those intricately patterned bulb flowers in  
South Africa which would remain open for just a few hours.

I wonder why there is such a difference in longevity.

I know that winter flowers last quite long, probably because  
pollinators aren't out doing their job unless the weather is warm, and  
it usually isn't.

However, zinnias are a summer flower.  I wonder if there is something  
about Mexico that requires long-lasting flowers.

Has anyone made note of long-lasting bulb flowers?

Diane Whitehead
Victoria, British Columbia, Canada
maritime zone 8, cool Mediterranean climate
mild rainy winters, mild dry summers

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