How to Grow Compact Hinodegiri Azalea

Compact Hinodegiri Azalea

Rhododendron simsii 'Hinodegiri'

shrub

Hinodegiri azalea is a compact, evergreen flowering shrub known for its vibrant red-scarlet blooms that appear in spring. It's a popular ornamental choice for gardens, containers, and landscapes due to its dense growth habit and spectacular floral display. The plant typically grows 3-4 feet tall and wide with small, glossy dark green foliage.

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Example Compact Hinodegiri Azalea timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Compact Hinodegiri Azalea

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. Harvest Compact Hinodegiri Azalea

    Late summer into fall

    Before the first fall frost (≈ Nov 8)

Sample dates for Pittsburgh, PA. Sign up to get exact Compact Hinodegiri Azalea dates for your own zip code.

Growing Conditions

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Sun: Partial shade, 3-6 hours of filtered sunlight daily; morning sun with afternoon shade is ideal
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Water: Keep soil consistently moist but not waterlogged. Water deeply 1-2 times per week depending on rainfall and temperature. Increase frequency during hot, dry periods. Mulch to retain moisture.
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Spacing: 36 inches
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Days to maturity: 3-5 years for mature flowering plant
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Planting depth: Plant at same depth as root ball; do not bury the crown

Soil

Type: Well-draining, acidic, organic-rich soil
pH: 4.5-5.5
Amendments:
Peat moss Composted bark Aged compost Sulfur if pH needs lowering

Growing Zones

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Thrives in zones 7b-9b; can be grown in zone 10 with afternoon shade

7b 8a 8b 9a 9b 10a

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Growth Stages

1

Establishment

First 6-12 months

Young plant with developing root system and initial shoot growth

Keep soil consistently moist, provide afternoon shade, avoid fertilizing first year, mulch around base

2

Vegetative Growth

Year 1-3

Dense foliage development with branching; plant fills out its compact form

Light fertilization in spring with acid-forming fertilizer, prune after flowering to maintain shape, consistent moisture

3

Budding

August-December

Flower buds form along stems in late summer/early fall

Do not fertilize late in season; avoid pruning after July to protect developing buds

4

Flowering

February-May (depending on climate)

Abundant red-scarlet flowers bloom, covering foliage; peak color in spring

Enjoy blooms; deadhead spent flowers to encourage bushiness; maintain moisture levels

5

Post-Bloom

May-June

Flowering ends; new vegetative growth emerges; seed pods present if not deadheaded

Prune to maintain compact shape immediately after flowering, remove seed pods, resume light feeding if desired

Companion Planting

Plan your garden →

Plant with:

Avoid planting near:

Alkaline-loving plants Plants requiring dry conditions Black walnut trees Dry-root competitors

Common Pests

  • Spray with horticultural oil or insecticidal soap in spring; use systemic insecticides in severe cases; maintain adequate moisture to reduce stress

  • Increase humidity by misting foliage, spray with water to dislodge, use miticides if severe

  • Yellow sticky traps, horticultural oils, insecticidal soap, or systemic insecticides

  • Remove heavily infested stems, apply horticultural oil in dormant season, systemic insecticides in growing season

  • Install deer fencing, apply deer repellents, or choose plants in already-protected locations

Uses

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Ornamental Landscape Plant

Household

Hinodegiri azalea serves as a stunning focal point in gardens, foundation plantings, and borders due to its vibrant red flowers and compact growth habit. Its evergreen foliage provides year-round structure and interest to the landscape. [source]

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Cut Flower Arrangements

Craft

The showy red-scarlet blooms make excellent fresh cut flowers for spring bouquets and indoor floral displays. Branches cut at peak bloom provide long-lasting color and fragrance. [source]

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Container Growing

Household

The compact size makes Hinodegiri ideal for growing in large containers on patios, decks, and entryways. Container cultivation allows gardeners in cooler zones to move plants indoors during severe winters. [source]

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Pollinator Support

Wildlife

The abundant spring flowers attract bees, butterflies, and other pollinators, supporting early-season foraging. Provides nectar and pollen when many other plants are not yet blooming. [source]

Harvest Tips

This is an ornamental shrub, not harvested for food. Enjoy blooms in place or cut fresh flowers for indoor arrangements in spring. Cut stems will last 7-10 days in a vase with fresh water. Deadhead spent flowers by pinching them off to encourage branching and future bloom production.

Fun Facts

  • 🌱 Hinodegiri is a Japanese cultivar whose name means 'fire on the plant' in Japanese, referring to the brilliant red-scarlet flowers that appear to glow on the foliage.
  • 🌱 Azaleas are technically Rhododendrons; the distinction is that azaleas typically have 5 stamens while most rhododendrons have 10, and azaleas are often deciduous or semi-evergreen.
  • 🌱 Hinodegiri azaleas have been cultivated for over a century and remain one of the most popular azalea varieties for landscape use due to their reliable blooming and compact habit.

Gardening Terms

New to gardening? Learn about terms used in this guide:

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