Perennials

All perennials remain in the garden for at least three years, however, since most plants are not established the first year, data generally begins after the first winter. We compile information on:

1. time of first flower,
2. duration of flowering,
3. height,
4. and foliar health.

We also provide comments as the plants mature throughout the season. Accompanying these data is a photograph of the flower and plant habit.

You can see our very top picks for each year under Classic City Awards.

Trial Results From 2009 Trial Results From 2008 Trial Results From 2007 Trial Results From 2006 Trial Results From 2005 Trial Results From 2004

Botanical Name     Common Name

A

B

C

D

E

F-G

H

I

J-L

M-O

P

Q

R

S

T

U-Z

Teucrium hyrcanicum Common Name: Purple Tails [ More Info ]

Thalictrum dasycarpum Common Name: Purple Meadow-rue [ More Info ]

Thalictrum flavum ssp. glaucum Common Name: Yellow Meadow-rue [ More Info ]

Thalictrum hybrid 'Black Stockings' Common Name: Hybrid Meadow-rue [ More Info ]

Thalictrum minus 'Adiantifolium' Common Name: Lesser Meadow-rue [ More Info ]

Thalictrum pubescens Common Name: Tall Meadow-rue [ More Info ]

Thalictrum speciosissimum Common Name: Meadow-rue [ More Info ]

Thymus praecox 'Coccineus' Common Name: Creeping Thyme [ More Info ]

Tiarella 'Sugar and Spice' Common Name: Foamflower [ More Info ]

Tiarella cordifolia 'Spring Symphony' Common Name: Foamflower Probst [ More Info ]

Tiarella hybrid 'Pink Brushes' Common Name: Foamflower [ More Info ]

Tiarella hybrid 'Spanish Cross' Common Name: Foamflower Probst [ More Info ]

Tiarella spp. 'Candy Striper' Common Name: Foamflower [ More Info ]

Tradescantia 'Sunshine Charm' Common Name: [ More Info ]

Tradescantia 'Therese' Common Name: Spiderwort Therese is one of our best performing Tradescantias. Her color is delicate lavender tinged wih pink. [ More Info ]

Tradescantia sillamontana Common Name: Hairy Spiderwort [ More Info ]

Tradescantia sillamontana 'White Velvet' Common Name: Hairy Spiderwort [ More Info ]

Tradescantia virginiana 'Caerulea-plena' Common Name: Virginia Spiderwort [ More Info ]

Tradescantia virginiana 'Mrs. Loewer' Common Name: Virginia Spiderwort [ More Info ]

Tradescantia virginiana 'Osprey' Common Name: Virginia Spiderwort [ More Info ]

Tradescantia virginiana 'Sylvana' Common Name: Virginia Spiderwort [ More Info ]

Tricyrtis 'Taipei Silk' Common Name: [ More Info ]

Tricyrtis 'Tojen' Common Name: Toad Lily [ More Info ]

Tricyrtis 'White Towers' Common Name: Toad Lily [ More Info ]

Tricyrtis affinis 'Ako' Common Name: Toad Lily [ More Info ]

Tricyrtis formosana 'Gilt Edge' Common Name: Toad Lily [ More Info ]

Tricyrtis formosana 'Samurai' Common Name: Toad Lily [ More Info ]

Tricyrtis hirta 'Golden Gleam' Common Name: Toad Lily [ More Info ]

Tricyrtis hirta 'Miyazaki' Common Name: Toad Lily [ More Info ]

Tricyrtis hybrid 'Empress' Common Name: HybridToad Lily [ More Info ]

Tricyrtis hybrid 'Lightning Strike' Common Name: Hybrid Toad Lily [ More Info ]

Tricyrtis hybrid 'Taipei Silk' Common Name: Hybrid Toad Lily [ More Info ]

Tricyrtis macranthopsis x hirta 'Kohaku' Common Name: Hybrid Toad Lily [ More Info ]