Yesterday my earliest daffodils began to bloom - just in time for temperatures to plunge from their unseasonable summer highs.  Nothing is certain in a garden. How many times do we have to relearn this lesson?  The following takes me back a couple of weeks  - before we were all boldly planting seeds. Beginning tomorrow days will be brighter longer. The sun will not set until 6:46 pm. It will seem like spring has arrived – even though…