Making Colored Flame Pine Cones
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To get the pine cones looking their best, heat them in the oven at 225 degrees F on a foil-covered cookie sheet. They will open all the way and look fuller.
Use only one salt or compound for color.
Be very careful handling these chemicals and follow the manufacturer' s directions. Some compounds can be poisonous if mishandled
Alum (thallium) for a bright green flame
Strontium chloride for a bright red flame
Boric acid for a deep red flame
Calcium for a reddish-orange flame
Calcium chloride for a yellowish-orange flame
Table salt for a yellow flame
Borax (sodium tetraborate) for a yellow-green flame
Blue vitriol (copper sulfate) or barium for a green flame
Saltpeter (potassium nitrate) for a violet flame
Or Epsom salts (magnesium sulfate) for a white flame.