Plant Design Group At Shady Brook Farm

Update: Plant Design Group carried through on their promise to refund the $ 110 for the missing plants and gave me an additional $ 180 in consideration for doing less than what I expected.
I hired Plant Design Group to create a garden area of about 200 square feet and plant 34 plants. The job called for removing sod, tilling, mulching, etc. First, they laid out the design and started to remove sod before I gave the OK — consequently there is a part of the lawn where the sod was removed and replaced that has not grown back adequately.
More troublesome is the fact that they only created a 160 square foot garden area that contains only 29 plants. When I asked them to finish the job, they only offered to refund me $ 110 for the missing plants. As for the square footage, they claim their specs only said «up to 200 sq ft’ — they claim 160 sq feet satisfies their specs! I expected «up to 200 sq ft» to mean «close to 200». But 160 is 20% less than what I and any reasonable person would expect.