Delphiniums, which often suffer in our heat, are rated 6-1. Much of central Illinois is zone 6 so as you can see we are on the top range of heat that a delphinium will tolerate. Since the heat zone ratings are fairly new they are not listed as regularly as hardiness zones.
Methods Using Common Household Items. Sometimes cream of tartar will help to remove set stains from old linens. Mix 3 teaspoon of the cream of tartar per cup of water and boil your linen in the soup for a few minutes. Rinse in cold water and allow to sun dry.ethods Using Common Household Items. Sometimes cream of tartar will help to remove set stains from old linens. Mix 3 teaspoon of the cream of tartar per cup of water and boil your linen in the soup for a few minutes. Rinse in cold water and allow to sun dry.
If you add Â½ cup of white vinegar to the rinse cycle, the liquid will freshen up your laundry and help colors maintain their intensity. Prior to a first washing, you can also soak dark fabrics for 30 minutes in water mixed with Â½ cup of vinegar and 2 teaspoons of salt to help set the dyes. Organic Authority shares more tips on using vinegar to help fabric colors set.