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About Douglas Iris
Douglas Iris is a super rare houseplant šæ that needs regular watering to thrive. They do best in long-lasting, direct light āļø and should be less than 1 foot from a window.
Douglas Iris likes soil that is good at retaining moisture. Your plant shouldn't need added fertilizers if you repot each time it doubles in size.
Douglas Iris belongs to the Iris genus, and is native to Southwestern North America.
Taxonomy
Iris douglasiana
Iris
Iridaceae
Asparagales

How to care for Douglas Iris

How often to water your Douglas Iris

every 9
Douglas Iris needs 0.5 cups of water every 9 when it doesnāt get direct sunlight and is potted in a 5" pot.
Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.
Water 0.5 cups every
9

Check the growing potential in your area
A plant's growing potential is determined from its location, the time of year, and current local weather.

Select a city to check sunlight intensity

Finding light for Douglas Iris in your home

a window
Douglas Iris love being close to bright, sunny windows š.
Place it less than 1ft from a south-facing window to maximize the potential for growth.
Douglas Iris does not tolerate low-light š«.
Select your region to see how the current weather in your area affects the placement of Douglas Iris in your home š”.

How to fertilize Douglas Iris

Most potting soils come with ample nutrients which plants use to produce new growth.
By the time your plant has depleted the nutrients in its soil itās likely grown enough to need a larger pot anyway.
To replenish this plant's nutrients, repot your Douglas Iris after it doubles in size or once a yearāwhichever comes first.

Douglas Iris prefers for the soil to dry out between waterings and should be watered regularly. Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.
Sunlight Needs
Douglas Iris requires abundant, bright and direct light. Place it less than one foot from a window to ensure it receives enough light to survive šŖ. Select your region to see how the current weather in your area affects the placement in your home š”.
Toxicity
Greg does not have confirmed data on this plantās toxicity. If you, a family member, or a pet consumes plant material of unknown toxicity, itās always best to consult a medical professional.
If you or someone else ingested this plant, call Poison Control atĀ US (800) 222-1222.Ā If a pet consumed this plant, contact your veterinarian or the ASPCA atĀ US (888) 426-4435.
Soil
Douglas Iris is very sensitive to dry soil, so choose a potting soil that retains moisture. A good soil will still drain well and contain lots of organic matter such as coco coir or sphagnum moss.
Fertilizer
Douglas Iris should be repotted after it doubles in size or once a year, whichever comes first. Fresh potting soil has all the nutrients your plant needs, so as long as itās refreshed yearly, you shouldnāt need to use fertilizer. Remember, plants get their energy from sunlight, not fertilizer!
Growth Pattern
Douglas Iris grows vertically and new growth will emerge from the top of the plant.
Growing Outdoors
USDA Hardiness Zone
Douglas Iris can be grown outdoors in USDA Hardiness Zones 6a-9b. Find your local hardiness zone here.
Care Summary for Douglas Iris
Douglas Iris
Greg recommends:

0.5 cups every 9 days

< 1ft from a window

Repot after 2x growth
Based on the 4ā pot your plant is in, and that it doesnāt get direct sunlight.
