How Often Should I Water a Moss Rose?

Water Needs

• Moss rose is a drought-tolerant plant that prefers full sun. Once a moss rose is established, it typically does not need to be watered, unless dry conditions persist and the plant starts to wilt. Considered an annual, it may reseed from year to year, but it will be slow to bloom in subsequent years. When growing from seed, start them indoors six weeks before last frost date. Let seedlings dry out between watering.

Soil Conditions

• Use soil made up of compost, garden soil and sand to give moss roses a good foundation. A well-drained soil should allow water to pass without pooling. To test drainage before planting, use a watering can to water that area. While the water hits the area, watch to see whether it flows away from the spot or pools. After watering, check the spot over the course of a few hours to see how the water drains. If soil doesn't drain well, move to a more elevated place in the garden or plant moss roses in a container with good drainage holes.

Weather Conditions

• Evaluate the needs of your moss rose based on weather conditions. Rain is the easiest measuring tool of moisture for the garden. Sun and heat factor into how fast moisture is pulled away from soil and plants. Cooler temperatures allow moisture to stay longer. Wind dries out plants and soil quickly. If you notice weather with excessive wind, sun, or heat, you may need to water. If you notice your moss rose wilt, water immediately.

Plant Location

• Consider you location. If it's raining but your plants are in pots under an overhang, you may need to water; however, under an overhang, they are protected from sun and wind and may not dry out. Remove saucers and self-water trays from pots and containers to allow for drainage. Keep moss roses in an open area, where they are not shaded by taller plants. Moss roses need sunlight to bloom.