Iris douglasiana (Douglas Iris) - Monthly Plant Care Calendar
Written by Julie Bawden-Davis
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Pacific coast iris native--from Santa Barbara into Oregon. Plant features 3-inch-wide blooms in purple, violet-blue, white and cream.
Here's what you should be doing each month of the year for this plant in Sunset Zones 22, 23 & 24: Find Your Climate Zone.
Click a month to be taken directly to that months plant care: January - February - March - April - May - June - July - August - September - October - November - December
January
BUY
Buy bulbs or plants when available in the nursery.
February
BUY
Buy bulbs or plants when available in the nursery.
PLANT
Plant in a well-draining soil in a sunny to part-shade location.
PEST/DISEASE INSPECTION
Check plants for snails and slugs.
TREAT FOR PEST/DISEASE
Remove and destroy snails and slugs.
TRANSPLANT
Transplant when new roots are starting to form, which usually happens around now. Dig around base of plant to check if this is occurring. Wait if necessary.
PROPAGATE
Divide iris when the plant becomes overcrowded. Dig up the plant, including the roots, cut stalks (fans) apart with a knife and trim the foliage. Soak in water for an hour before replanting.
March
Flowering Shrubs: Get plant care reminders sent to you for the plants in YOUR garden. Click below to visit each plant and their available plant care! Plant Care (396)Zauschneria californica California Fuchsia 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 SteveBrigham Rosa hybrid 'Lavender Lace' Lavender Lace Floribunda Rose 21, 22, 23, 24 9a, 9b, 10a, 10b, 11 JackShoultz Zauschneria californica ssp. latifolia California Fuchsia 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 SteveBrigham |
BUY
Buy bulbs or plants when available in the nursery.
PLANT
Plant in a well-draining soil in a sunny to part-shade location.
PEST/DISEASE INSPECTION
Check plants for snails and slugs.
TREAT FOR PEST/DISEASE
Remove and destroy snails and slugs.
PROPAGATE
Divide iris when the plant becomes overcrowded. Dig up the plant, including the roots, cut stalks (fans) apart with a knife and trim the foliage. Soak in water for an hour before replanting.
April
BUY
Buy bulbs or plants when available in the nursery.
FERTILIZE
Feed every four weeks with a blooming fertilizer.
WATER
Water when the top two inches of soil is dry.
PEST/DISEASE INSPECTION
Check plants for snails and slugs.
TREAT FOR PEST/DISEASE
Remove and destroy snails and slugs.
May
FERTILIZE
Feed every four weeks with a blooming fertilizer.
WATER
Water when the top two inches of soil is dry.
PEST/DISEASE INSPECTION
Check plants for snails and slugs.
TREAT FOR PEST/DISEASE
Remove and destroy snails and slugs.
June
FERTILIZE
Feed every four weeks with a blooming fertilizer.
WATER
Water when the top two inches of soil is dry.
PEST/DISEASE INSPECTION
Check plants for snails and slugs.
TREAT FOR PEST/DISEASE
Remove and destroy snails and slugs.
July
FERTILIZE
Feed every four weeks with a blooming fertilizer.
WATER
Once blooms fade, water sparingly, as high heat and moist soil can cause rot.
PEST/DISEASE INSPECTION
Check plants for snails and slugs.
TREAT FOR PEST/DISEASE
Remove and destroy snails and slugs.
PROPAGATE
Divide iris when the plant becomes overcrowded. Dig up the plant, including the roots, cut stalks (fans) apart with a knife and trim the foliage. Soak in water for an hour before replanting.
August
FERTILIZE
Feed every four weeks with a blooming fertilizer.
WATER
Once blooms fade, water sparingly, as high heat and moist soil can cause rot.
PEST/DISEASE INSPECTION
Check plants for snails and slugs.
TREAT FOR PEST/DISEASE
Remove and destroy snails and slugs.
PROPAGATE
Divide iris when the plant becomes overcrowded. Dig up the plant, including the roots, cut stalks (fans) apart with a knife and trim the foliage. Soak in water for an hour before replanting.
September
BUY
Buy bulbs or plants when available in the nursery.
PLANT
Plant in a well-draining soil in a sunny to part-shade location.
FERTILIZE
Feed every four weeks with a blooming fertilizer.
WATER
Once blooms fade, water sparingly, as high heat and moist soil can cause rot.
PEST/DISEASE INSPECTION
Check plants for snails and slugs.
TREAT FOR PEST/DISEASE
Remove and destroy snails and slugs.
PROPAGATE
Divide iris when the plant becomes overcrowded. Dig up the plant, including the roots, cut stalks (fans) apart with a knife and trim the foliage. Soak in water for an hour before replanting.
October
BUY
Buy bulbs or plants when available in the nursery.
PLANT
Plant in a well-draining soil in a sunny to part-shade location.
PROPAGATE
Divide iris when the plant becomes overcrowded. Dig up the plant, including the roots, cut stalks (fans) apart with a knife and trim the foliage. Soak in water for an hour before replanting.
November
BUY
Buy bulbs when available in the nursery.
PLANT
Plant in a well-draining soil in a sunny to part-shade location.
December
BUY
Buy bulbs when available in the nursery.
If you have information like this for your region and would like to share it please let us know, we'll be sure to give you writing credit and link back to your website! Click here to contact us.
You can get these instructions sent directly to your Profile page, click here to learn how.
- You can get Plant Care Reminders sent directly to your Profile page, learn how.
- See all of Julie Bawden-Davis' Monthly Plant Care Reminders here.
- See all available Plant Care Reminders at the Plant Care Hub here.
- Search for plant care alphabetically here.
- Add Iris douglasiana (Douglas Iris) to one of your plant lists, learn how.
- Search our plant database for photos and more great information here.

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