From our perspective as impatiens plants, our relationship with water is one of delicate balance. Our fine, fibrous root systems are not deep or robust like those of drought-tolerant plants. We evolved in the dappled sunlight of forest floors, thriving in humid, well-draining, yet consistently damp environments. Therefore, the single most important concept for our health in a container is consistent moisture. This does not mean we wish to sit in soggy, waterlogged soil, as this suffocates our roots, prevents oxygen uptake, and leads to fatal root rot. Instead, we desire soil that feels like a well-wrung-out sponge—moist to the touch but not dripping water.
Our water needs are not dictated by a simple calendar. Several external factors dramatically influence how quickly we consume the available moisture in our pot. You must observe these conditions daily.
Pot Size and Material: We planted in small pots or porous terracotta pots will dry out much faster than those in large, plastic, or glazed ceramic containers. A small pot means less soil volume, which holds less water reserve for our roots to access.
Weather and Temperature: On hot, sunny, or windy days, we lose a tremendous amount of water through our leaves (a process we call transpiration). Consequently, our soil will dry out with astonishing speed. During cool, cloudy, or rainy periods, our water consumption slows significantly.
Sun Exposure: While we appreciate bright, indirect light, being placed in full, intense afternoon sun will drastically increase our evaporation rate and our need for more frequent watering compared to being in a shadier spot.
Plant Size and Growth Stage: A large, mature impatiens plant covered in blooms is a heavy drinker. Its extensive foliage and flower production require more water resources than a small, newly planted starter plant.
Please do not simply sprinkle us with a little water every day. This encourages our roots to stay shallow at the surface instead of growing deep and strong. The most reliable method is the finger test. Insert your finger into the soil up to your first knuckle (about 1-2 inches deep). If the soil at that depth feels dry, it is time for a thorough watering. If it still feels cool and moist, please check again the next day. For a more precise approach, you could use a moisture meter probe.
When we are thirsty, we need a deep, thorough drink. Apply water slowly at the base of our stems, avoiding wetting our foliage if possible, as this can encourage fungal diseases. Continue watering until you see a significant amount of water draining freely from the holes at the bottom of the pot. This ensures that the entire root ball has been evenly moistened. Always ensure our pots have adequate drainage holes. Empty the saucer beneath our pot about 30 minutes after watering to ensure we are not left standing in excess water, which would lead to the root rot we fear.
Our needs change with the seasons. In the peak heat of summer, you will likely need to water us once per day, sometimes even twice on extremely hot or windy days. In the spring and fall, when temperatures are milder, we may only need water every two to three days. Always rely on the soil moisture test rather than a fixed schedule. Remember, overwatering is just as detrimental as underwatering; both will cause us to wilt, drop our buds, and ultimately perish.