Here's how you can sign it:
1. Use a combination of signs: You can sign "FLOWER" (using the sign for "flower" and then forming a circle with your hand) and then the sign for "CIRCLE" (using your index finger to make a circle in the air). This combination visually represents a garland of flowers.
2. Use descriptive signs: You can describe the object. For example, you could sign "STRING" or "WREATH" to indicate a string of decorations or a circle of foliage.
3. Use the sign for "DECORATE" and then point to the location where the garland would be, such as a door or a fireplace.
The best approach will depend on the context and the person you are signing with.
It's important to remember that ASL is a visual language, and using gestures and facial expressions can help you to communicate your meaning clearly.