Step 1: Understanding the Concept:
Trees in landscaping are selected either for their "flowering" beauty (showy blooms) or their "foliage" beauty (attractive leaves, texture, or evergreen nature).
Step 2: Detailed Explanation:
A. Bombax malabaricum (Silk Cotton Tree): This is primarily a "flowering tree." It is famous for its large, bright red, fleshy flowers that appear on leafless branches during spring. Its foliage is not its primary ornamental feature.
B. Cedrus deodara (Deodar Cedar): This is a quintessential "ornamental foliage tree." It is an evergreen conifer with beautiful, soft, needle-like foliage and a graceful, drooping habit. It is prized for its year-round green appearance and majestic form.
C. Jacaranda mimosifolia: This is primarily grown for its stunning violet-blue "flowers." Although it has fern-like leaves, it is categorized as a flowering tree because of the spectacular display it makes during the blooming season.
D. Thuja orientalis (Morpankhi): This is a popular "foliage tree" or large shrub. It is grown for its unique, flat, fan-like evergreen foliage. It is widely used for hedging and topiary because of its attractive leaf structure.
Thus, Cedrus and Thuja are the plants grown specifically for their ornamental leaves/foliage.
Step 3: Final Answer:
The trees grown for ornamental foliage are Cedrus deodara and Thuja orientalis.