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Beyond ‘Thriller, Filler, Spiller’: 5 Creative Summer Outdoor Planter Ideas from Terrain’s New Book

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Beyond ‘Thriller, Filler, Spiller’: 5 Creative Summer Outdoor Planter Ideas from Terrain’s New Book

May 29, 2026

If you’re as uninspired as we are by the pre-planted container gardens for sale at many nurseries and big-box garden centers, you may want to get your hands on a copy of Terrain: The Container Garden Book, the newest volume from the popular purveyor of bo-ro (bohemian-romantic) goods for the home and garden. (Did we just coin a new term?) Every season, their team dreams up beautiful potted combinations of plants to display at the entrances to their stores, and what sets their creations apart is their sheer originality. There’s nothing formulaic or prosaic about their container gardens, no mindless adherence to the long-held “thriller, filler, spiller” rule.

In fact, the planters pictured in the book largely eschew that adage in favor of compositions that are more naturalistic and unconventional. Divided into four sections—spring, summer, fall, and winter—the book offers plenty of exciting ideas for seasonal plant combinations, as well as practical advice like choosing a container, preparing it for planting, and selecting a topper (e.g., pebbles, straw mulch, moss, etc.) But the most important reason to welcome the book into your library is that it will nudge you to skip that Costco buy and to instead plant a container garden yourself that is as interesting and unique as you are.

Below, we share five examples from the book of artful summer plant combos.

Excerpted from Terrain: The Container Garden Book by Melissa Bartley and Greg Lehmkuhl (Artisan Books).

Floral Rambler

Cosmos bipinnatus &#8\2\16;Candyfloss Red&#8\2\17; (cosmos), Dicranum scoparium (mood moss), Eragrostis elliottii (blue love grass), Impatiens x hybrida &#8\2\16;Sakimp035&#8\2\17; (aka SunPatiens Vigorous Shell Pink) (impatiens), Jasminum officinale &#8\2\16;Frojas&#8\2\17; (aka Fiona Sunrise) (jasmine), Pelargonium peltatum &#8\2\16;Cascade Sofie&#8\2\17; (ivy geranium). Photograph by Martha Lawlor.
Above: Cosmos bipinnatus ‘Candyfloss Red’ (cosmos), Dicranum scoparium (mood moss), Eragrostis elliottii (blue love grass), Impatiens x hybrida ‘Sakimp035’ (aka SunPatiens Vigorous Shell Pink) (impatiens), Jasminum officinale ‘Frojas’ (aka Fiona Sunrise) (jasmine), Pelargonium peltatum ‘Cascade Sofie’ (ivy geranium). Photograph by Martha Lawlor.

Sunbeam

Carex testacea &#8\2\16;Prairie Fire&#8\2\17; (orange New Zealand sedge), Coreopsis verticillata &#8\2\16;Moonbeam&#8\2\17; (tickseed), Echinacea &#8\2\16;Cheyenne Spirit (coneflower), Petunia &#8\2\16;Cascadias Indian Summer&#8\2\17; (petunia), Senna didymobotrya (popcorn plant). Photograph by Martha Lawlor.
Above: Carex testacea ‘Prairie Fire’ (orange New Zealand sedge), Coreopsis verticillata ‘Moonbeam’ (tickseed), Echinacea ‘Cheyenne Spirit (coneflower), Petunia ‘Cascadias Indian Summer’ (petunia), Senna didymobotrya (popcorn plant). Photograph by Martha Lawlor.

Celestial Succulents

Aeonium &#8\2\16;Blushing Beauty&#8\2\17; (aeonium), Bismarckia nobilis (Bismarck palm), Dichondra argentea &#8\2\16;Silver Falls&#8\2\17; (silver nickel vine), Echeveria &#8\2\16;Stella Blanc&#8\2\17; (echeveria), Echeveria &#8\2\16;Red Velvet&#8\2\17; (echeveria), Echeveria runyonii &#8\2\16;Topsy Turvy&#8\2\17; (echeveria), Echeveria lilacina (ghost echeveria), Graptopetalum paraguayense subsp. bernalense (Bernal ghost plant), Hylotelephium telephioides (Allegheny stonecrop), Kalanchoe fedtschenkoi (lavender scallops), Rhipsalis baccifera (mistletoe cactus), Sempervivum &#8\2\16;Blue Whale&#8\2\17; (hens and chicks), Sedum spurium &#8\2\16;Tricolor&#8\2\17; (stonecrop). Photograph by Martha Lawlor.
Above: Aeonium ‘Blushing Beauty’ (aeonium), Bismarckia nobilis (Bismarck palm), Dichondra argentea ‘Silver Falls’ (silver nickel vine), Echeveria ‘Stella Blanc’ (echeveria), Echeveria ‘Red Velvet’ (echeveria), Echeveria runyonii ‘Topsy Turvy’ (echeveria), Echeveria lilacina (ghost echeveria), Graptopetalum paraguayense subsp. bernalense (Bernal ghost plant), Hylotelephium telephioides (Allegheny stonecrop), Kalanchoe fedtschenkoi (lavender scallops), Rhipsalis baccifera (mistletoe cactus), Sempervivum ‘Blue Whale’ (hens and chicks), Sedum spurium ‘Tricolor’ (stonecrop). Photograph by Martha Lawlor.

Fiery Plumes

Melinus nerviglumis &#8\2\16;Pink Champagne&#8\2\17; (ruby grass). Photograph by Greg Lehmkuhl.
Above: Melinus nerviglumis ‘Pink Champagne’ (ruby grass). Photograph by Greg Lehmkuhl.

Blue Skies

Plumbago auriculata &#8\2\16;Imperial Blue&#8\2\17; (cape plumbago), Salvia rosmarinus (rosemary), zinc-painted locust branch. Photograph by Martha Lawlor.
Above: Plumbago auriculata ‘Imperial Blue’ (cape plumbago), Salvia rosmarinus (rosemary), zinc-painted locust branch. Photograph by Martha Lawlor.

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