Lavandula angustifolia, commonly called English lavender, is valued for its fragrant foliage, purple flower spikes, and compact form. In the Chicagoland…
Evaluating Perennials for Chicagoland Gardens
Perennials in Focus is a plant evaluation program that examines new and underused plants for Chicagoland, the third largest metropolitan area in the country. A group of horticultural experts trials and evaluates plants at numerous locations across the region. Results help consumers, public gardens, growers, landscape designers, breeders, and other industry professionals make informed plant choices.
Blog
Wet summers can reveal differences between black-eyed Susan plants that remain hidden during warm, well-drained growing seasons. Extended rain, heavy dew, and…
A chain-link fence solves a practical boundary problem, but its open structure can leave a yard feeling exposed. Perennial vines soften the metal, add habitat,…
In Chicagoland gardens, a successful perennial border plant must handle more than summer heat. It needs to survive cold winters, fluctuating spring moisture,…
Hellebores are among the first perennials to bring color to a Chicagoland garden. Their nodding flowers often emerge while the soil is cold, lawns are still…
Beneficial wasps are easy to overlook in a perennial border. Many are tiny, solitary insects with slender bodies, while larger hunting wasps may be mistaken…
Black walnut trees are valuable landscape plants, offering shade, wildlife habitat, attractive foliage, and a strong vertical presence. They can also create a…
Threadleaf coreopsis is a familiar summer perennial in the Midwest, valued for finely textured foliage, long-lasting yellow or pink blooms, and a clumping…
Urban gardens often ask more from perennial plants than their nursery labels reveal. Soil beside sidewalks, driveways, foundations, and parking areas may be…
Verbena bonariensis brings an airy, vertical presence to perennial borders. Its tall, branching stems rise above lower plants, carrying clusters of small…
In the Garden
Evaluator gardens are located across the Chicagoland area, representing a range of growing conditions. Visit our retail and wholesale partners to find trialled perennials for your own garden.
Retail & Wholesale: Hinsdale Nurseries (Willowbrook, IL), Mariani Nurseries (Kenosha, WI & Garden Prairie, IL), Northwind Perennials (Burlington, WI), The Growing Place (Aurora, IL).
Wholesale Only: Hinsdale Nurseries (Plano, IL), Intrinsic Perennial Gardens (Hebron, IL).
Our Evaluation Program
The 2017–2020 evaluation cycle included Agastache 'Blue Boa', Allium senescens 'Blue Eddy', Amsonia ciliata var. filifolia 'Georgia Pancake', Astilbe 'Chocolate Shogun', Boltonia astroides 'James Crocket', Brunnera 'Alexander's Great', and Geranium cinereum 'Jolly Jewel Purple'. Completed evaluations include Amsonia 'Blue Ice' (2004–07).
On April 10, 2020, the program published snapshot profiles for Vernonia lettermanii 'Iron Butterfly', Stokesia laevis 'Elf', Stachys officinalis 'Pink Cotton Candy', Lobelia 'Monet Moment', Helleborus 'Winter Thrillers', Geum 'Mai Tai', Geranium soboliferum 'Butterfly Kisses', Gentiana x intermedia 'True Blue', Eurybia divaricata, Asparagus 'Purple Passion', and Agastache 'Bolero'.
Browse the full collection of snapshots organized alphabetically — from A–D, E–H, I–Q, and R–Z — to find detailed performance data on perennials trialled across Chicagoland.
