Isn't every plant great in a group? Well, the answer is no. Some plants are too vigorous in their growth habits to share the stage, while others are better if put on a pedestal all their own (i.e. the focal point plants of the landscape). Today's episode we talk about plants that are great in masses—that is to say—in groups of three or more. We have options for shade, choices for sun, and selections for those in-between exposures situations. We'll also feature some great plants that we've seen grouped to perfection in gardens featured in Fine Gardening. And you don't have to be a millionaire to group plants. Many of our suggestions are easily divided after just a year or two, providing you with multiple plants for the price of just one.

Expert guest: Daniel Robarts is a horticulturist at Coastal Maine Botanical Gardens in Boothbay, Maine.

Danielle's Plants

'Kitten Around' catmint (Nepeta faassenii 'Kitten Around', Zones 3-8)

'All Gold' Japanese forest grass (Hakonechloa macra 'All Gold', Zones 5-9)

'Kobold' liatris (Liatris spicata 'Kobold', Zones 3-8)

Smooth hydrangea (Hydrangea arborescens and cvs., Zones 3-9)

Carol's Plants

'Galaxy Blue' agapanthus (Agapanthus 'Galaxy Blue', Zones 6-10)

Feather Falls™ sedge (Carex 'ET CRX01', Zones 5-9)

Firefinch™ coneflower (Echinacea purpurea 'G0052Y', Zones 4-8)

Flowering tobacco (Nicotiana sylvestris, Zones 10-11)

Expert's Plants

'Millenium' allium (Allium 'Millenium', Zones 5-8)

'Brunette' bugbane (Actaea simplex 'Brunette', Zones 3-8)

'Starry Starry Night' hibiscus (Hibiscus 'Starry Starry Night', Zones 4-9)