💧 Plant Watering Schedule Calculator

Select your plant type to get a suggested watering frequency, then see your next watering date based on when you last watered.

The six intervals, and the date maths

Plant type is the only thing that sets the frequency. Each category carries one fixed number of days:

vegetable garden 2   herb 3   fern 4   tropical 7   orchid 7   succulent 14

next watering = last watered + interval
status        = interval − days since last watered

Pick the tropical setting and water on the 10th, and the next date is the 17th; by the 20th the tool reports it overdue by 3 days. The date box starts on today, so leaving it alone shows the full interval ahead of you.

Why an interval alone cannot be right

Nothing else is measured. Pot size, soil mix, light, humidity, temperature and season all move drying time by more than the gap between these categories — a pothos in a small terracotta pot on a sunny sill can dry twice as fast as the same plant in a big glazed one across the room. Outdoors it is looser still: the two-day vegetable figure ignores rain, mulch, and whether your soil is sand or clay.

Take the date as a prompt to go and check the soil, not an instruction to pour. More houseplants are killed by watering to a schedule than by being forgotten: constantly wet soil holds no air, roots rot, and the wilting that follows looks exactly like thirst, so the usual response makes it worse.

Frequently asked questions

How often should a vegetable garden be watered?

Volume matters more than frequency. The common target is about an inch of water a week including rain, which is 0.62 gallons per square foot, or 62 gallons over a 100 sq ft bed. Delivering that in one or two soakings beats a daily sprinkle.

How often should I water an orchid?

Roughly weekly for a phalaenopsis in bark indoors, which is the figure used here, but the roots are a better guide: silvery-white means dry, green means still wet. Bark holds far less water than potting compost.

Is it better to water a little every day?

Rarely. Shallow daily watering wets the top inch and encourages roots to stay there. Watering thoroughly until it runs from the drainage holes, then leaving it until the soil has dried down, produces deeper roots and a tougher plant.