Gardening for the fall

At 50 degrees this morning it feels like fall is already here.  It is the 5th of August and it feels like late Sept.  The first spinach planting is already showing damping off, so perhaps the second will do better with this cooler weather.  I'm still seeding lettuce and bok choy and transplanting cauliflower and broccoli.  Of course it is dry, but I'm not complaining.  There is adequate soil moisture and some showers are predicted for this week.  I transplanted some nappa cabbage seedlings I started last week.  Nappa is a flea beetle magnet, so it should be interesting to see if I can keep them off at least until the seedlings take off.