Just thought I'd share this, which arrived in my Inbox this morning.
I've long been a happy customer of several seed houses, purchasing on-line.
One of those is Baker Creek Heirloom Seeds, who sends their mailing list updates, promotions, and things such as this video, about succession planting and what you can still plant in July (in the northern hemisphere):
https://www.youtube.com/watch?v=K9UtK-bVpsg As the presenter in this video says, they're talking mainly about USDA hardiness zones 5 through 7, but with some calendar adjustments for the warmer zones, and perhaps some season extension in the cooler ones, you may be able to use at least a couple of these suggestions.
Happy gardening, and happier harvesting!