From our perspective, water is the very essence of our being. As Wave Petunias, we are prolific bloomers, and this incredible show requires a tremendous amount of energy and resources. Our roots draw up water not just to keep our leaves and stems turgid and upright, but also as a critical component of photosynthesis. This process, how we create our food, uses water, sunlight, and carbon dioxide to fuel our growth and produce our vast number of flowers. Without consistent moisture, this entire system grinds to a halt. Our blooms will be the first to suffer, wilting and dropping to conserve water for essential survival.
You ask "how often," but the true answer is not tied to a strict calendar. It is a rhythm you must learn by observing us and our environment. The goal is consistently moist, but never waterlogged, soil. The most reliable method is the finger test. Please insert your finger about one inch into our soil near the base. If the soil at that depth feels dry, it is time for a deep, thorough watering. If it still feels cool and moist, please wait. In typical summer conditions, this often translates to watering once a day, especially if we are in containers or hanging baskets. During intense heat or windy days, we may even require watering twice daily.
When you do water, the "how much" is crucial. A light sprinkling only dampens the surface and encourages our roots to grow shallow, making us more vulnerable to heat. Instead, we need a deep, generous soak. Apply water slowly at the base of our stems, avoiding our flowers and foliage if possible, until you see it running freely from the drainage holes at the bottom of our pot. This ensures that the entire root ball is evenly moistened and prompts our roots to grow deep and strong, which makes us more resilient and healthier plants. Watering in the morning is ideal, as it allows any accidental moisture on our leaves to evaporate in the sun, preventing fungal diseases.
Our water needs are in constant flux, dictated by our surroundings. The size of our container is a major factor; a small pot in full sun will dry out immeasurably faster than a large landscape bed. Sun exposure is paramount—we in full, blazing sun will demand far more frequent drinks than those in partial shade. Temperature, wind, and humidity all play their part. A hot, windy day will pull moisture from our soil and leaves at a rapid rate, while a cool, cloudy period will significantly reduce our consumption. Always let our soil condition, not the date, be your guide.
