May
Good heat tolerant flowers include Begonias, Blue Daze, Globe Amaranth, Impatiens, Lantana, Melampodium, Pentas, Portulaca, and Vinca
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You can change the color of the blooms of many varieties of Hydrangeas by adjusting the soil pH (a measure of how acid or alkaline the soil is). Many Hydrangeas will have blue flowers when they are growing in an acidic soil. To help produce blue flowers drop the soil pH by using Aluminum sulphate, Sulfur or Ironite. To change the blooms of a Hydrangea to a pink or rose color you can broadcast Hydrated Lime or Dolomitic Lime around them and water in. Our soils are acidic in our area and pH adjustment for flower color will often have to be repeated in the future because the soil returns to a more acid condition over time.
You likely have Daylily Rust (Puccinia hemerocallidis) a new disease that will require removing and destroying infected leaves and spraying the new leaves that come out. We suggest spraying the new leaves that emerge on a 7 to 14 day schedule with two separate fungicides. Start by spraying with Ferti-lome Broad Spectrum Fungicide (Daconil) then the next time that you spray use Ferti-lome Systemic Liquid Fungicide (Banner). This spray schedule should be kept up until the leaves mature and anytime that there is new growth on your Daylilies.