Your impatiens watering frequency depends on where you planted them. In-ground plants don't need water every day under normal conditions. Container plants often do during summer heat. The key is checking your soil rather than sticking to a rigid calendar.
When I first grew impatiens, I asked how often to water impatiens and got mixed answers. So I tested it myself. My hanging basket impatiens on the front porch needed water every single day in July and August. Skip one day in 90°F (32°C) heat and they went limp by noon. My garden bed impatiens on the north side stayed perky all week with just two deep soakings.
Pots dry out faster for a few simple reasons. A 12-inch pot holds far less soil than a garden bed. Sun heats the pot walls and bakes the soil from outside in. Wind pulls moisture off exposed surfaces. Drainage holes let excess water escape. In-ground plants tap into a bigger soil mass that stays cool and damp below the surface.
Your impatiens water needs change with the weather. Aim for about 2 inches (5 centimeters) of water per week for plants in the ground. When temps climb past 80°F (27°C), bump that up to 4 inches (10 centimeters) per week. Count rainfall toward your total before you add more from the hose.
The finger test is your best tool for getting water right. Push your finger 1 to 2 inches (2.5 to 5 centimeters) into the soil near the plant's base. Dry at that depth means water now. Still damp means wait a day and check again. This works better than any fixed schedule. It adjusts for rain, temp swings, and your soil type.
Water at the base of your plants, not from above. Wet leaves set up the perfect spot for downy mildew and other fungal diseases. A soaker hose or drip line sends water right to the roots. Morning watering works best so leaves can dry before the cool evening air sets in.
Wilting doesn't always mean your plants need more water. Overwatered impatiens in soggy soil wilt too. Drowned roots can't pull up nutrients. Check the soil first before you grab the hose. If the top inch feels wet and your plant still droops, root rot may have started. Let the soil dry out a bit and fix your drainage.
In my experience, the biggest watering mistake people make is treating all impatiens the same. Your patio containers and your shaded garden bed have very different needs. I water my pots every morning in summer and my beds just twice a week. That split approach keeps every plant happy with much less wasted water.
Once you find the right rhythm, your impatiens will bloom strong from spring through frost. A quick finger check takes five seconds and stops both drought stress and overwatering before they start. Pay attention to what the soil tells you and your plants will thrive.
Read the full article: Impatiens Flowers: Varieties and Care
