I guess it also depends on where you are in the world on what can still be grown.
But I'm defintily planning on getting some things going this year... mostly the winter stuff like kale and some cabbages, but am also thinking of putting some blueberry plants in in preparation for next year. and the rest will be started in April next year, I think.
Unfortunately the flowers are not providing any shade, so lettuce won't work. Also I won't be able to water those young plants enough the coming time.