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Iris sanguinea Plant Care Reminders

Japanese Iris

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General Information

  • Instruction By Julie Bawden-Davis
    Notes Plant is a close cousin to I. sibrica. It features blue flowers at the end of tall, upright stems. Blooms start in May. Creates a large clump of grass-like foliage. Attracts bees and hummingbirds.

    Notes:
    A very close cousin of Iris siberica. Botanists continue to argue the subtle differences that lays in the reddish papery sheath that envelopes the closed flower buds and branching form. I'll let them battle out the nomenclature while I enjoy my living Van Gogh. Tolerates summer drought quite well. Needs spring moisture to produce a massive flowering display. Can be used as a cut flower.
    Iris sanguinea
    Sunset Zones
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Plant Care Instruction

  • Scroll down or click on any month for plant care instructions
    • January
    • February
    • March
    • April
    • May
    • June
    • July
    • August
    • September
    • October
    • November
    • December
    January
    1. Buy

    Buy bulbs when available in the nursery.
    2. Plant

    Plant in a sunny, moist location in soil on the acidic side. Use a peat moss-based potting soil for container planting
    3. Water

    Keep the soil evenly moist.
    4. Pest/Disease Inspection

    Check plants for snails, slugs and thrips.
    5. Treat for Pest/Disease

    Remove and destroy snails and slugs. Treat thrips with the appropriate pesticide.
    6. Transplant

    Transplant in a sunny, moist location in soil on the acidic side. Use a peat moss-based potting soil for container planting.
    7. Propagate

    Divide only 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.
    February
    1. Buy

    Buy bulbs when available in the nursery.
    2. Plant

    Plant in a sunny, moist location in soil on the acidic side. Use a peat moss-based potting soil for container planting.
    3. Water

    Keep the soil evenly moist.
    4. Pest/Disease Inspection

    Check plants for snails, slugs and thrips.
    5. Treat for Pest/Disease

    Remove and destroy snails and slugs. Treat thrips with the appropriate pesticide.
    6. Transplant

    Transplant in a sunny, moist location in soil on the acidic side. Use a peat moss-based potting soil for container planting.
    7. Propagate

    Divide only 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
    1. Fertilize

    Feed with an acid-based blooming fertilizer monthly. If the soil is on the alkaline side, apply aluminum sulfate or iron sulfate every 6 to 8 weeks.
    2. Water

    Keep the soil evenly moist.
    3. Pest/Disease Inspection

    Check plants for snails, slugs and thrips.
    4. Treat for Pest/Disease

    Remove and destroy snails and slugs. Treat thrips with the appropriate pesticide.
    April
    1. Fertilize

    Feed with an acid-based blooming fertilizer monthly. If the soil is on the alkaline side, apply aluminum sulfate or iron sulfate every 6 to 8 weeks.
    2. Water

    Keep the soil evenly moist.
    3. Mulch

    Mulch with 2 to 4 inches of shredded bark.
    4. Pest/Disease Inspection

    Check plants for snails, slugs and thrips.
    5. Treat for Pest/Disease

    Remove and destroy snails and slugs. Treat thrips with the appropriate pesticide.
    May
    1. Fertilize

    Feed with an acid-based blooming fertilizer monthly. If the soil is on the alkaline side, apply aluminum sulfate or iron sulfate every 6 to 8 weeks.
    2. Water

    Keep the soil evenly moist.
    3. Mulch

    Mulch with 2 to 4 inches of shredded bark.
    4. Pest/Disease Inspection

    Check plants for snails, slugs and thrips.
    5. Treat for Pest/Disease

    Remove and destroy snails and slugs. Treat thrips with the appropriate pesticide.
    6. Harvest

    Makes an excellent cut flower.
    June
    1. Fertilize

    Feed with an acid-based blooming fertilizer monthly. If the soil is on the alkaline side, apply aluminum sulfate or iron sulfate every 6 to 8 weeks.
    2. Water

    Keep the soil evenly moist.
    3. Mulch

    Mulch with 2 to 4 inches of shredded bark.
    4. Pest/Disease Inspection

    Check plants for snails, slugs and thrips.
    5. Treat for Pest/Disease

    Remove and destroy snails and slugs. Treat thrips with the appropriate pesticide.
    6. Harvest

    Makes an excellent cut flower.
    July
    1. Fertilize

    Feed with an acid-based blooming fertilizer monthly. If the soil is on the alkaline side, apply aluminum sulfate or iron sulfate every 6 to 8 weeks.
    2. Water

    Keep the soil evenly moist at all times. Tolerates some summer drought.
    3. Mulch

    Mulch with 2 to 4 inches of shredded bark.
    4. Pest/Disease Inspection

    Check plants for snails, slugs and thrips.
    5. Treat for Pest/Disease

    Remove and destroy snails and slugs. Treat thrips with the appropriate pesticide.
    6. Harvest

    Makes an excellent cut flower.
    August
    1. Fertilize

    Feed with an acid-based blooming fertilizer monthly. If the soil is on the alkaline side, apply aluminum sulfate or iron sulfate every 6 to 8 weeks.
    2. Water

    Keep the soil evenly moist at all times. Tolerates some summer drought.
    3. Pest/Disease Inspection

    Check plants for snails, slugs and thrips.
    4. Treat for Pest/Disease

    Remove and destroy snails and slugs. Treat thrips with the appropriate pesticide.
    5. Harvest

    Makes an excellent cut flower.
    September
    1. Buy

    Buy bulbs when available in the nursery.
    2. Plant

    Plant in a sunny, moist location in soil on the acidic side. Use a peat moss-based potting soil for container planting.
    3. Fertilize

    Feed with an acid-based blooming fertilizer monthly. If the soil is on the alkaline side, apply aluminum sulfate or iron sulfate every 6 to 8 weeks.
    4. Water

    Keep the soil evenly moist at all times. Tolerates some summer drought.
    5. Pest/Disease Inspection

    Check plants for snails, slugs and thrips.
    6. Treat for Pest/Disease

    Remove and destroy snails and slugs. Treat thrips with the appropriate pesticide.
    7. Transplant

    Transplant in a sunny, moist location in soil on the acidic side. Use a peat moss-based potting soil for container planting.
    8. Propagate

    Divide only 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
    1. Buy

    Buy bulbs when available in the nursery.
    2. Plant

    Plant in a sunny, moist location in soil on the acidic side. Use a peat moss-based potting soil for container planting.
    3. Water

    Keep the soil evenly moist.
    4. Pest/Disease Inspection

    Check plants for snails, slugs and thrips.
    5. Treat for Pest/Disease

    Remove and destroy snails and slugs. Treat thrips with the appropriate pesticide.
    6. Transplant

    Transplant in a sunny, moist location in soil on the acidic side. Use a peat moss-based potting soil for container planting.
    7. Propagate

    Divide only 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
    1. Buy

    Buy bulbs when available in the nursery.
    2. Plant

    Plant in a sunny, moist location in soil on the acidic side. Use a peat moss-based potting soil for container planting.
    3. Water

    Keep the soil evenly moist.
    4. Pest/Disease Inspection

    Check plants for snails, slugs and thrips.
    5. Treat for Pest/Disease

    Remove and destroy snails and slugs. Treat thrips with the appropriate pesticide.
    6. Transplant

    Transplant in a sunny, moist location in soil on the acidic side. Use a peat moss-based potting soil for container planting.
    7. Propagate

    Divide only 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.
    December
    1. Buy

    Buy bulbs when available in the nursery.
    2. Plant

    Plant in a sunny, moist location in soil on the acidic side. Use a peat moss-based potting soil for container planting.
    3. Water

    Keep the soil evenly moist.
    4. Pest/Disease Inspection

    Check plants for snails, slugs and thrips.
    5. Treat for Pest/Disease

    Remove and destroy snails and slugs. Treat thrips with the appropriate pesticide.
    6. Transplant

    Transplant in a sunny, moist location in soil on the acidic side. Use a peat moss-based potting soil for container planting.
  • Buy

    When's the best time to buy this plant? When can you buy these from seed (if you can)? When is it usually available? What are things to look for when you're buying it? Or anything other tidbit of information you can share!

    January

    Buy bulbs when available in the nursery.

    February

    Buy bulbs when available in the nursery.

    September

    Buy bulbs when available in the nursery.

    October

    Buy bulbs when available in the nursery.

    November

    Buy bulbs when available in the nursery.

    December

    Buy bulbs when available in the nursery.

    Plant

    When's a good time to plant this plant or bulb? Any special planting instructions?

    January

    Plant in a sunny, moist location in soil on the acidic side. Use a peat moss-based potting soil for container planting

    February

    Plant in a sunny, moist location in soil on the acidic side. Use a peat moss-based potting soil for container planting.

    March

    Plant in a sunny, moist location in soil on the acidic side. Use a peat moss-based potting soil for container planting.

    April

    Plant in a sunny, moist location in soil on the acidic side. Use a peat moss-based potting soil for container planting.

    September

    Plant in a sunny, moist location in soil on the acidic side. Use a peat moss-based potting soil for container planting.

    October

    Plant in a sunny, moist location in soil on the acidic side. Use a peat moss-based potting soil for container planting.

    November

    Plant in a sunny, moist location in soil on the acidic side. Use a peat moss-based potting soil for container planting.

    December

    Plant in a sunny, moist location in soil on the acidic side. Use a peat moss-based potting soil for container planting.

    Fertilize

    When should you fertilize this plant? Which kind of fertilizer do you recommend? Should you use different fertilizers at different times of year?

    February

    Feed after blooming stops every two weeks until plant enters dormancy in early summer.

    March

    Feed with an acid-based blooming fertilizer monthly. If the soil is on the alkaline side, apply aluminum sulfate or iron sulfate every 6 to 8 weeks.

    April

    Feed with an acid-based blooming fertilizer monthly. If the soil is on the alkaline side, apply aluminum sulfate or iron sulfate every 6 to 8 weeks.

    May

    Feed with an acid-based blooming fertilizer monthly. If the soil is on the alkaline side, apply aluminum sulfate or iron sulfate every 6 to 8 weeks.

    June

    Feed with an acid-based blooming fertilizer monthly. If the soil is on the alkaline side, apply aluminum sulfate or iron sulfate every 6 to 8 weeks.

    July

    Feed with an acid-based blooming fertilizer monthly. If the soil is on the alkaline side, apply aluminum sulfate or iron sulfate every 6 to 8 weeks.

    August

    Feed with an acid-based blooming fertilizer monthly. If the soil is on the alkaline side, apply aluminum sulfate or iron sulfate every 6 to 8 weeks.

    September

    Feed with an acid-based blooming fertilizer monthly. If the soil is on the alkaline side, apply aluminum sulfate or iron sulfate every 6 to 8 weeks.

    October

    Feed with an acid-based blooming fertilizer monthly. If the soil is on the alkaline side, apply aluminum sulfate or iron sulfate every 6 to 8 weeks.

    Water

    Is there a time to reduce or increase watering? Any special requirements? Things to avoid during certain times of the year?

    January

    Keep the soil evenly moist.

    February

    Keep the soil evenly moist.

    March

    Keep the soil evenly moist.

    April

    Keep the soil evenly moist.

    May

    Keep the soil evenly moist.

    June

    Keep the soil evenly moist.

    July

    Keep the soil evenly moist at all times. Tolerates some summer drought.

    August

    Keep the soil evenly moist at all times. Tolerates some summer drought.

    September

    Keep the soil evenly moist at all times. Tolerates some summer drought.

    October

    Keep the soil evenly moist.

    November

    Keep the soil evenly moist.

    December

    Keep the soil evenly moist.

    Mulch

    Does this plant need to be mulched? Are there specific types of Mulch which are better for this plant? How much?

    March

    If not planted in a water garden situation, mulch plants with 2 to 4 inches of shredded bark.

    April

    Mulch with 2 to 4 inches of shredded bark.

    May

    Mulch with 2 to 4 inches of shredded bark.

    June

    Mulch with 2 to 4 inches of shredded bark.

    July

    Mulch with 2 to 4 inches of shredded bark.

    August

    If not planted in a water garden situation, mulch plants with 2 to 4 inches of shredded bark.

    September

    If not planted in a water garden situation, mulch plants with 2 to 4 inches of shredded bark.

    October

    If not planted in a water garden situation, mulch plants with 2 to 4 inches of shredded bark.

    Pest/Disease Inspection

    What are the common problems this plant will face and when should you look for them to appear?

    January

    Check plants for snails, slugs and thrips.

    February

    Check plants for snails, slugs and thrips.

    March

    Check plants for snails, slugs and thrips.

    April

    Check plants for snails, slugs and thrips.

    May

    Check plants for snails, slugs and thrips.

    June

    Check plants for snails, slugs and thrips.

    July

    Check plants for snails, slugs and thrips.

    August

    Check plants for snails, slugs and thrips.

    September

    Check plants for snails, slugs and thrips.

    October

    Check plants for snails, slugs and thrips.

    November

    Check plants for snails, slugs and thrips.

    December

    Check plants for snails, slugs and thrips.

    Treat for Pest/Disease

    How do you treat the common problems for this plant? What products or concoctions or natural means do you use? Any special requirements?

    January

    Remove and destroy snails and slugs. Treat thrips with the appropriate pesticide.

    February

    Remove and destroy snails and slugs. Treat thrips with the appropriate pesticide.

    March

    Remove and destroy snails and slugs. Treat thrips with the appropriate pesticide.

    April

    Remove and destroy snails and slugs. Treat thrips with the appropriate pesticide.

    May

    Remove and destroy snails and slugs. Treat thrips with the appropriate pesticide.

    June

    Remove and destroy snails and slugs. Treat thrips with the appropriate pesticide.

    July

    Remove and destroy snails and slugs. Treat thrips with the appropriate pesticide.

    August

    Remove and destroy snails and slugs. Treat thrips with the appropriate pesticide.

    September

    Remove and destroy snails and slugs. Treat thrips with the appropriate pesticide.

    October

    Remove and destroy snails and slugs. Treat thrips with the appropriate pesticide.

    November

    Remove and destroy snails and slugs. Treat thrips with the appropriate pesticide.

    December

    Remove and destroy snails and slugs. Treat thrips with the appropriate pesticide.

    Transplant

    When's the best time to dig up and transplant this from one spot to another? (This is different than planting). Any special requirements?

    January

    Transplant in a sunny, moist location in soil on the acidic side. Use a peat moss-based potting soil for container planting.

    February

    Transplant in a sunny, moist location in soil on the acidic side. Use a peat moss-based potting soil for container planting.

    March

    Transplant in a sunny, moist location in soil on the acidic side. Use a peat moss-based potting soil for container planting.

    April

    Transplant in a sunny, moist location in soil on the acidic side. Use a peat moss-based potting soil for container planting.

    September

    Transplant in a sunny, moist location in soil on the acidic side. Use a peat moss-based potting soil for container planting.

    October

    Transplant in a sunny, moist location in soil on the acidic side. Use a peat moss-based potting soil for container planting.

    November

    Transplant in a sunny, moist location in soil on the acidic side. Use a peat moss-based potting soil for container planting.

    December

    Transplant in a sunny, moist location in soil on the acidic side. Use a peat moss-based potting soil for container planting.

    Propagate

    When's a good time to divide, take cuttings, layer or propagate this plant. Any special requirements?

    January

    Divide only 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.

    February

    Divide only 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

    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

    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.

    May

    Divide only 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.

    June

    Divide only 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.

    July

    Divide only 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

    Divide only 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

    Divide only 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

    Divide only 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

    Divide only 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.

    Harvest

    When's a good time to harvest this plant? What's the best way to harvest? Are there special requirements or features?

    May

    Makes an excellent cut flower.

    June

    Makes an excellent cut flower.

    July

    Makes an excellent cut flower.

    August

    Makes an excellent cut flower.

    Special requirements

    Any other requirement for this plant? Is there anything that doesn't fit into the other care categories?

    June

    Keep planting area dry when the bulbs are dormant, or dig them up and store in a cool, dry place until fall planting time.

    July

    Keep planting area dry when the bulbs are dormant, or dig them up and store in a cool, dry place until fall planting time.

    August

    Keep planting area dry when the bulbs are dormant, or dig them up and store in a cool, dry place until fall planting time.

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