I love roses, they are my favorite flowers ever.
Roses are beautiful! They are a perennial flower. This means that they live for more than two years. 
That is awesome. I love how roses can come in many colors.
Rose
A rose is a woody perennial flowering plant of the genus Rosa, in the family Rosaceae, or the flower it bears. There are over three hundred species and thousands of cultivars. They form a group of plants that can be erect shrubs, climbing, or trailing, with stems that are often armed with sharp prickles. Flowers vary in size and shape and are usually large and showy, in colours ranging from white through yellows and reds. Most species are native to Asia, with smaller numbers native to Europe
"by" with "my". This alteration was generally followed through the 19th Century. More recent editors do not favor this alteration, as it narrows the meaning from the larger principles of the sonnet.
Roses.
This poem is a comparison between two flowers that are representations of the youth's beauty. Shakespeare compares these flowers, which vary greatly in their appearance, although they are essentially the same kind of flower, the "canker-blooms" or wild roses, according to Katherine Duncan-Jones,