Yes, you can grow sunflowers in the Philippines. The warm and humid climate in the Philippines makes it an ideal environment for growing sunflowers.
The best time to plant sunflowers is during the dry season, from November to May. Sunflowers are heat-loving plants that prefer direct sunlight, so it’s important to choose a sunny spot with minimal shade. It’s also wise to mulch heavily around your plants to keep the soil moist and prevent weeds.
Sunflower plants need plenty of water. They should be watered thoroughly and evenly once or twice per week throughout their life cycle. If there is a lack of rain, regular watering will ensure that your sunflowers get enough moisture for optimal growth and color production.
Fertilizing is recommended for healthy sunflowers as they are heavy feeders and require several nutrients for successful growth, such as nitrogen, phosphorus, calcium, sulfur, iron, and other minerals. You can use fertilizer specifically formulated for sunflowers or broad-spectrum fertilizer with higher levels of phosphorus at mid-season when flowers are beginning to form by sprinkling the granules on top of the soil and then watering them in thoroughly for best results.
Finally, deadhead your plants often so that all their energy is focused on flower production instead of seed production. Enjoy vibrant blooms all season long!