give stuff that costs nothing:
weeding
offer to donate several hours of weeding at a mutually convenient time. every gardener alive gets weary of
pulling or hoeing out weeds, especially after the initial thrill of it concludes sometime mid-june, around father’s day.
offer to bring your own weed puller or sharpened hoe. maybe the lemonade, too. and remember that it is not only the weeding but also the company that you provide that will be appreciated.
photos
many gardeners enjoy taking pictures of their own garden. some do not. in either case, i can guarantee that you
will see their garden through a different lens than they do.
the pictures that you take will show the gardeners a side of their work that will hopefully open their eyes to a garden that they did not know exists. and it will get their creative juices flowing once again. for a small investment, you could even print the images. otherwise, just send them by email.
pruning
not many of us enjoy cutting our own kids’ hair. many gardeners feel the same way about their plants. offer to come over with your loppers, shears and a green-wood saw, and do some trimming. take away the trimmings as a bonus.
consulation
if you love to garden, offer your services to people on your list who have a moderate relationship with or interest in gardening. your experience is worth something, likely more than you know.