A child looks at a cactus garden.
A child in a red shirt is looking at a massive cactus garden in the desert.
You can not infer the shirt is red.
Children don't have to wear a red shirt. Cactus gardens don't have to be massive. Cactus gardens can be grown outside the desert.
We cannot know from the first sentence if the child's shirt is red, the cactus garden is massive, or the garden is in a desert.