This month's planting tips should be taken with a grain of salt because I don't know how this heat wave affects things. I think planting indoors would be suggested on everything but root plants (carrots, onions, etc.).
- This is the month to transplant iris and calla lily. There's a great video on how to divide and transplant iris here. (But if they don't absolutely need deviding, possibly wait until next year.)
- Plant carrots and mustard by the first week of September, and kale before October 1 (assuming the first frost will still be coming at the regular time).
- Plant broccoli and cauliflower seeds now. Since we're expecting more heat you might want to start these indoors.
- Plant bulbing onions, bunching onions, leeks, and shallots this month (cut off date for these is October 1). Shallots sets are planted, not seeds. The rest should always be direct seeded into the garden, which is unfortunate considering this heat.
- Find out what other vegetables and herbs you can plant this month HERE. But I'd hold off on anything that can still be planted next month, unless you want to seed indoors.
- Providing some shade for your plants may help. Dorris at FlipFlopGardener suggests plant umbrellas (and gives some nifty instructions on how to set them up. I've used plastic flowers to shade my read seedlings until they were strong enough to grow without shade, and it worked well.