Final answer:
The text does not specify who planted Miss Strangeworth's roses. They are likely a legacy from her family, symbolizing her connection to the past and her traditions.
Step-by-step explanation:
The roses that Miss Strangeworth cared about so much were not expressly mentioned to be planted by anyone in particular within the passages provided. However, from similar texts and understanding of this common literary theme, it can be assumed that they are often a legacy from a previous generation, possibly her family, as roses are a recurrent symbol of legacy and memory in literature. Miss Strangeworth's care for the roses may highlight her connection to her past, family traditions, or personal history.