perennial flower
Fanal astilbe
Does best with steady moisture; dry shade will reduce bloom and leaf quality.
Growing Profile
- Hardiness
- Zones 4a-8a
- Sun
- PartialShade
- Soil
- LoamClay
- Water
- High
- Planting depth
- Set the crown at the same level it grew in the nursery pot.
- Container min
- 2+ gal (good)
- Goals
- Curb appeal & colorPollinators & wildlife
Harvest & Use
- Window
- red plumes in early summer
- Output
- 3-8 weeks of bloom/display/year
- First output
- 1-2 yrs
- Best for
- Curb appeal & colorPollinators & wildlife
Timing: red plumes in early summer. This profile tracks 3-8 weeks of bloom/display/year with a harvest or display window of 2-5 weeks where defensible.
Plant photos
What it looks like in the garden
Use these photos to compare the plant's leaves, stems, flowers, fruit, and overall habit before you buy or plant.
Photos show a representative plant in the garden. Fruit color, size, and growth habit can vary by cultivar, season, nursery stock, and site.
Photo sources: LavaLampBamboo / Wikimedia Commons (CC BY-SA 4.0)
Quantitative Profile
- Full output
- 2-3 yrs
- Mature size
- 1-4 ft H x 1-3 ft W
- Spacing
- 1-3 ft apart
- Planting depth
- Set the crown at the same level it grew in the nursery pot.
- Container min
- 2+ gal (good)
- Productive life
- 3-10 yrs
- Difficulty
- 2/5
- Reliability
- 4/5
- Data quality
- Medium profile, No pound-yield source
Pound return is the stock-style yield metric. These are planning ranges for comparing plants, not guarantees. Cultivar, rootstock, climate, soil, pruning, pest pressure, and wildlife can move actual results.
Planting Checklist
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Right-size container with drainage
Containers / Before plantingUse a container large enough for mature roots, with open drainage holes to prevent root rot.
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Expanding container potting mix
Containers / Before plantingUse a lighter container medium instead of dense garden soil in pots and grow bags.
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Hose timer
Watering / Install at plantingKeep new plantings and containers from drying out during establishment.
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Drip irrigation kit
Watering / Install at plantingDeliver steady root-zone moisture with less leaf wetness and less water loss.
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Organic mulch
Soil / After plantingHold soil moisture, suppress weeds, moderate soil temperature, and protect shallow roots.
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Hand trowel
Tools / Planting dayPlant starts, herbs, flowers, bulbs, and smaller container plants at the right depth.
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Shade cloth
Protection / Heat wavesReduce heat stress for cool-season greens, tender transplants, and containers in hot sun.
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Finished compost
Soil / Bed prepImprove bed structure and organic matter before planting annuals, perennials, shrubs, and trees.
Planting Strategy
- Planting depth: Set the crown at the same level it grew in the nursery pot.
- Container minimum: 2+ gal (good). Use 2+ gal per plant, or wider mixed containers with similar water needs.
- Start with one plant when testing fit in a new bed or container.
- Use the pairing map below to choose nearby companions or compatible varieties.
Risk Factors
- Match the site first: partial, shade light, loam, clay soil, and high water.
- Use 1-3 ft apart as the first spacing model; adjust for hedges, trellises, containers, or local guidance.
- Plan around mature size: 1-4 ft H x 1-3 ft W.
- Local drainage, pests, chill hours, wildlife pressure, and microclimates can change the result.
Related Planning Guides
Comparable Plants
Companion Plants & Pairings
Plant Nearby
Shade-tolerant foliage and spring woodland plants make more sense as a layered understory than as isolated specimens.
Use it: Layer taller foliage behind low groundcovers and leave spring ephemerals undisturbed after they go dormant.
Sources & Methodology
This guide combines hardiness range, light, soil, water, harvest timing, traits, source listings, plant relationships, and quantitative planning metrics. Pairings are screened for practical garden fit.
Quantitative values use extension and botanical-reference ranges where available. For less-studied cultivars, similar crops fill gaps conservatively. Ranges are intentionally broad so the profile stays useful without pretending to be exact.
Quantitative sources: NC State Extension Gardener Plant ToolboxMissouri Botanical Garden Plant FinderK-State Extension Master Gardener Handbook - Herbaceous PlantsUniversity of Maryland Extension - Types of Containers for Growing VegetablesIllinois Extension - Growing Vegetables in Containers
Source listing: Amazon. Search links are not paid placements unless explicitly marked; affiliate listings may earn a commission. Last reviewed: 2026-05-24.