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Shade Garden Calculator — Plants, Spacing & Layout

Find the perfect plants for your shade garden conditions

Matching Plants

14

Perennials

5

Shrubs

4

Ground Covers

5

0 hrs3 hrs (Partial Shade)12 hrs

Shade Classification

Partial Shade

14 matching plants

Perennials

5

Shrubs

4

Ground Covers

5

Perennials

HostaLavender/White
12–36"
Bleeding HeartPink/White
24–36"
Coral Bells (Heuchera)Coral/Pink/White
8–18"
BrunneraBlue
12–18"
Solomon’s SealWhite
24–36"

Shrubs

HydrangeaBlue/Pink/White
3–6 ft
RhododendronPink/Purple/White
4–10 ft
Japanese MapleFoliage (red/green)
8–25 ft
Mountain LaurelPink/White
5–15 ft

Ground Covers

Ajuga (Bugleweed)Blue/Purple
4–6"
Vinca MinorPurple/Blue
4–6"
Sweet WoodruffWhite
6–12"
Lamium (Dead Nettle)Pink/White/Purple
6–12"
Lily of the ValleyWhite
6–12"

Garden Summary

Area100 sq ft
Sun Hours3 hrs/day
Soilloam
Moistureaverage
Total Plants (est.)46

Example Calculations

1Partial Shade Garden — 100 sq ft, Loam Soil

Inputs

Sun Hours3 hours/day
Area100 sq ft
Soil TypeLoam
MoistureAverage

Result

Matching Plants8 species
ClassificationPartial Shade
Perennials4 species
Shrubs2 species
Ground Covers2 species

At 3 hours of sun, the garden is classified as Partial Shade. Loam soil with average moisture supports the widest range of shade plants including hostas, coral bells, hydrangeas, and lamium.

2Full Shade Under Trees — 200 sq ft, Clay Soil

Inputs

Sun Hours1 hour/day
Area200 sq ft
Soil TypeClay
MoistureMoist

Result

Matching Plants6 species
ClassificationFull Shade
Perennials2 species
Shrubs0 species
Ground Covers4 species

At 1 hour of sun, the garden is Full Shade. Clay soil with moist conditions narrows options to shade-loving plants that tolerate heavy soil: hostas, brunnera, ajuga, vinca, sweet woodruff, and lily of the valley.

3Dappled Shade Woodland — 300 sq ft, Loam Soil

Inputs

Sun Hours5 hours/day
Area300 sq ft
Soil TypeLoam
MoistureMoist

Result

Matching Plants11 species
ClassificationDappled Shade
Perennials6 species
Shrubs2 species
Ground Covers3 species

Dappled shade with loam and moist conditions is ideal for the widest plant palette. Options include bleeding heart, astilbe, ligularia, toad lily, hydrangea, and multiple ground covers.

Frequently Asked Questions

Q

What plants grow best in full shade?

Full shade (less than 2 hours of direct sun) limits options but several plants thrive. Hostas are the most popular shade perennial, tolerating deep shade. Ferns, brunnera, lily of the valley, ajuga, and vinca minor all do well with minimal sun.

  • Hostas: the king of shade gardens — hundreds of varieties, zones 3–9
  • Ferns (Japanese Painted): elegant foliage, 12–18" tall, zones 4–9
  • Brunnera: blue forget-me-not flowers in spring, zones 3–8
  • Ajuga (Bugleweed): ground cover with blue-purple spikes, very aggressive spreader
  • Lily of the Valley: fragrant white bells, spreads readily, zones 3–9
PlantTypeHeightBloom Color
HostaPerennial12–36"Lavender/White
Japanese FernPerennial12–18"Foliage only
BrunneraPerennial12–18"Blue
AjugaGround Cover4–6"Blue/Purple
Vinca MinorGround Cover4–6"Purple/Blue
Q

What is the difference between partial shade and dappled shade?

Partial shade means 2–4 hours of direct sun per day, usually morning or late afternoon. Dappled shade means 4–6 hours of filtered sunlight through a tree canopy. Dappled shade offers more total light and supports a wider range of plants including hydrangeas and astilbe.

  • Partial shade (2–4 hrs): morning sun with afternoon shade is ideal for most shade plants
  • Dappled shade (4–6 hrs): filtered light through tree canopy, supports more plant variety
  • Dappled shade is warmer and drier than full shade — plan watering accordingly
  • Partial shade on the north side of buildings stays cooler than east/west exposure
  • Many "shade" plants actually prefer dappled shade over true deep shade
Q

How do I plan spacing for a shade garden?

Spacing depends on mature plant size. Ground covers like ajuga and vinca go 12 inches apart. Perennials like hostas need 18–24 inches. Shrubs like hydrangeas need 48–60 inches. In shade gardens, plant slightly closer than sun gardens since growth is slower.

  • Ground covers: 10–12 inches apart — they fill in within 1–2 seasons
  • Small perennials (coral bells, astilbe): 15–18 inches apart
  • Medium perennials (hostas, ferns): 18–24 inches apart
  • Large shrubs (hydrangea, rhododendron): 48–60 inches apart
  • Plant 10–15% closer in shade than recommended sun spacing — slower growth fills gaps later
Q

What soil amendments help shade gardens?

Shade gardens under trees often have dry, root-filled soil. Add 3–4 inches of compost to improve moisture retention and nutrients. Leaf mold is the ideal amendment for shade gardens — it mimics the natural forest floor. Avoid tilling near tree roots.

  • Compost: add 3–4 inches and work into top 6 inches of soil
  • Leaf mold: decomposed leaves, excellent moisture retention, free to make
  • Pine bark mulch: 2–3 inches, acidifies slightly — great for rhododendrons
  • Do NOT till within the drip line of trees — it damages surface roots
  • Add sulfur to lower pH for acid-loving shade plants (azaleas, rhododendrons)
AmendmentBenefitApplicationCost
CompostNutrients + drainage3–4" tilled in$30–$50/cu yd
Leaf MoldMoisture retention2–3" as mulchFree (make your own)
Pine BarkAcidifying mulch2–3" surface layer$35–$45/cu yd
SulfurLower soil pH1–2 lbs per 100 sq ft$10–$15/bag

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Last Updated: Mar 9, 2026

This calculator is provided for informational and educational purposes only. Results are estimates and should not be considered professional financial, medical, legal, or other advice. Always consult a qualified professional before making important decisions. UseCalcPro is not responsible for any actions taken based on calculator results.

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