Of course you need tea sandwiches! Everything looks better on a tiered tray topped with fresh flowers! Even egg salad or cucumber sandwiches - inexpensive and oh so yummy! Source and recipe (curried chicken salad)
How about this sweet little detail? Tie a creamer or tea cup to the end of your tablecloth! Not only a great touch, but also practical if you are outside - it'll keep it from blowing! Source
Serve blooming teas in clear glasses or teapots - they are so beautiful to watch "bloom" and taste fantastic too! Source
How beautiful would these bottles be to serve water or ice tea in? Use a stencil or piece of lace, then stipple paint or glass etching to create a really beautiful, unique look! Source found via attentiontodetail blog
Homemade lavender sachets would make the perfect favor! They look beautiful tied off in a little ribbon. If you aren't up to sewing, just find muslin bags
(I've shown these before...but thought it was worth showing again for this theme!) I came up with these cookies for my boss's bday. I cut out a tea bag shape out of wax paper and used to cut out shortbread cookie dough. I used a round frosting tip to cut a hole at the top of each. Baked, dipped in chocolate then threaded real thread thru and cut out paper and stamped a cupcake on each side to look like a tag. I thought they would make a great choice to serve at this theme, too!