| Role | Job | Height | Placement | Count |
|---|
| Thriller | Architecture, focal point, draws eye up | 18–48+" | Center (360°) or Back (front view) | 1 |
| Filler | Bulk, color, texture, covers thriller legs | 8–18" | Surround thriller, fill middle | 3–5 |
| Spiller | Flows over rim, softens pot, extends volume | Trailing 6–24+" | Perimeter, all sides | 3–5 |
Sun-Loving Thrillers (6+ hrs direct sun)
- Grasses: Purple fountain grass, Japanese blood grass, feather reed grass, pink muhly grass.
- Spiky bloomers: Canna lily, salvia 'Mystic Spires', snapdragon 'Rocket', angelonia, celosia.
- Tropical drama: Banana (Musa), elephant ear, bird of paradise, cordyline 'Red Star'.
- Vertical annuals: Dahlia (tall), cosmos 'Sensation', cleome, tithonia.
Shade-Tolerant Thrillers (2–4 hrs / dappled)
- Coleus (tall cultivars: 'Kong', 'Wasabi', 'Mariposa')
- Fuchsia (upright: 'Gartenmeister', 'Dollar Princess')
- Begonia (cane: 'Angel Wing', 'Dragon Wing')
- Caladium (tall: 'White Queen', 'Red Flash')
- Heuchera (tall flower spikes: 'Palace Purple', 'Caramel')
Sun Fillers (Mounding, Colorful, 8–18")
- Petunia (Supertunia, Wave)
- Calibrachoa (Million Bells)
- Geranium (zonal, ivy)
- Lantana (Bandana, Bloomify)
- Verbena (Superbena, Lanai)
- Pentas (Butterfly series)
- Zinnia (Profusion, Zahara)
- Marigold (Signet, French dwarf)
- Portulaca (mounding types)
- Angelonia (Serena)
Shade Fillers
- Coleus (mounding: 'Wizard', 'Fairway', 'Kong Jr.')
- Impatiens (Beacon, Imara XDR - disease resistant)
- New Guinea Impatiens (Divine, SunPatiens - more sun tolerant)
- Begonia (wax, tuberous, Rieger)
- Torenia (Wishbone flower)
- Browallia (Silver Bells)
- Heuchera (foliage color: 'Caramel', 'Lime Rickey', 'Obsidian')
- Caladium (mounding)
Sun Spillers (Trailing, Vigorous)
- Sweet potato vine (Illusion, Sweet Caroline - purple, lime, bronze)
- Bacopa (Snowtopia, MegaCopa)
- Verbena (Trailing: Lanai, Temari)
- Calibrachoa (trailing: MiniFamous, Superbells)
- Petunia (trailing: Wave, Surfinia, Cascadia)
- Portulaca (trailing)
- Nasturtium (trailing: Phoenix, Jewel)
- Dichondra 'Silver Falls'
- Lysimachia 'Goldilocks' (Creeping Jenny)
Shade Spillers
- Ivy (English, Algerian - variegated brightens shade)
- Lobelia (trailing: Techno, Riviera)
- Bacopa (shade tolerant)
- Fuchsia (trailing: 'Swingtime', 'Marinka')
- Torenia (trailing)
- Creeping wire vine (Muehlenbeckia)
- Ajuga (Chocolate Chip, Bronze Beauty)
- Vinca minor (periwinkle - perennial, careful spread)
Design Rules That Prevent Failure
- Same water needs. Thirsty spiller + drought thriller = one dies.
- Same light needs. No mixing sun/spiller with shade/filler.
- Growth rates balanced. Vigorous sweet potato vine swallows slow coleus.
- Pot size ≥ 14". Smaller = 1 thriller + 1 filler + 1 spiller.
- Fertilize weekly. Dense planting = high demand.
Quick-Start Combos (Sun)
| Thriller | Filler (3) | Spiller (3) |
|---|
| Purple fountain grass | Pink petunia, lime coleus, white verbena | Lime sweet potato vine, white bacopa, silver dichondra |
| Canna 'Tropicana' | Orange marigold, yellow zinnia, red pentas | Orange nasturtium, red verbena, gold creeping jenny |
| Salvia 'Black & Blue' | Blue petunia, white calibrachoa, purple angelonia | Purple sweet potato vine, blue lobelia, white bacopa |
Thriller-filler-spiller isn't a restriction—it's a framework that guarantees balance. Pick plants you love that fit the roles, match their needs, and plant densely. Your containers will look like a designer did them.
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