Question

Which of the following genera belong to warm orchids?
(A) Cymbidium
(B) Phalaenopsis
(C) Miltonia
(D) Dendrobium
Choose the correct answer from the options given below:

• A. (A) and (B) only.
• B. (A), (C) and (D) only.
• C. (B) and (C) only.
• D. (B) and (D) only.

Hint:

Orchids have different temperature needs:
Phalaenopsis (Moth Orchids) are typically warm growers.
Dendrobium is diverse, but includes many important warm-growing types.
Cymbidium generally prefers cooler to intermediate conditions.
Miltonia can be intermediate to warm (true Miltonias) or cool (Miltoniopsis).

Answer 1

The Correct Option is D

Step 1: Cymbidium needs a cool night drop to flower, so it is not a warm grower.
Step 2: Miltonia (pansy orchids) are from cooler highland habitats, intermediate to cool growing.
Step 3: Phalaenopsis and the popular lowland Dendrobium sections both thrive in consistently warm, humid conditions.
Step 4: Correct option: \( \boxed{\text{(B) and (D) only}} \).