Anyway, I decided recently to try and look up how to make lavender jelly. This instructable will attempt to give you an idea on how lavender jelly can be made. :D
Step 1: What you need
4 Tbsp dried lavender bud (preferably organic or spray free)
4 cups white sugar
1/4 cup lemon juice
1 packet (70 grams) pectin
Stainles steel pot
Stainless steel / wooden spoon
4-6 jam jars, depending on the size; I bought mine from the nearby Mitre 10 hardware store. You can reuse your jam jars, nothing wrong with that.
(edit: the pectin I bought was only 9% pectin, the rest was glucose. My jelly turned out very runny. Next batch I make, I'll add more. Trial and error, eh?) Also, you can also use your own lavender buds. Just harvest the flowers before they open,and dry them in a cool area for a few days. Don't heat them up or anything as it will destroy or evaporate he essential oils that gives them that distinct lavender aroma.