flowering almond
棣 centers on a specific flowering tree: the flowering almond. Its meaning is narrow and botanical, with no clear extended senses.
棣 combines 木 (tree) with 隶, which likely contributes the sound. The character refers to a specific tree, the flowering almond.
The tree radical 木 beside 隶 suggests a specific tree. Picture a flowering almond tree with branches shaped like the strokes of 隶.
For テイ, imagine taking a break under the flowering almond tree with a cup of tea: tea -> テイ, and the tree provides shade.