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.

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Build a low-maintenance meadow in your Australian lawn

Using perennials to create a low-maintenance meadow in lawns is less about scattering flowers over turf and more about replacing part of that turf with a managed mix of long-lived plants. The result can soften a suburban block, feed insects, reduce irrigation and give a tired garden a sense of season. It is not a neglected area: a successful meadow has deliberate edges, suitable perennials and a simple cutting routine suited to Australian conditions. Learn more about Adresa Punktov Priyema Vtorsyr Ya V Goloseyevskom Raione.

Perennials in Focus offers a useful way to think about plant selection. Its collaborative trials record bloom period, flower colour, height and spread across sites and seasons, revealing which plants hold their shape and which need replacing. Those Chicago-area findings provide evidence, not a planting prescription for Australia. Local heat, rainfall, soils and weed pressures still need to guide the final mix.

Read the site before choosing plants

Australia has no single garden climate. Adelaide gardens may face hot, dry summers and cold winters, while Melbourne often combines cool mornings with irregular rain and warm, dry spells. Sydney has humidity, heavier summer rain and warm winters, whereas Canberra brings frost, wind and a short growing season. A perennial that handles one of these conditions may struggle in another, so rainfall and temperature records for your own area are more useful than a generic regional list.

Check drainage, soil texture and exposure before removing any turf. Low areas that remain wet after rain will need different plants from an open, freely draining slope. Notice where existing grass struggles: compacted soil, root competition and reflected heat often explain poor performance. Dense tree roots also require particular care, and plants beneath walnuts or other trees may receive less light and moisture than their open-garden counterparts.

Decide what low maintenance means for your household. A meadow cut once or twice a year suits some sites, but a narrow strip beside a path may need tidier edges. A larger patch can tolerate taller plants and a slower cutting cycle. Sketch the area, record the direction of prevailing wind and identify where you need access for mowing, mulch or observing pollinators.

Replace turf in manageable stages

Mark the intended edges with a hose or sand before lifting turf. Working in sections keeps the garden usable, makes disposal easier and allows you to correct the design before committing to a large area. Retain healthy turf elsewhere for a conventional lawn or create a curved border between the meadow and remaining grass.

Remove roots and perennial weeds rather than merely scalping the surface. Digging or carefully stripping sod prevents couch grass, kikuyu and other troublesome turf species from returning. On heavy clay, improve drainage with modest, soil-specific changes instead of creating a rich bed that encourages weeds. On poor sandy soil, a thin layer of mature compost can support establishment without producing excessive leafy growth.

Plant perennials in small groups, using plugs from reputable Australian nurseries or young plants raised from seed. Space them according to their expected mature spread, then water consistently while roots establish. Do not enrich the soil heavily with fertiliser; a meadow is generally leaner and less prone to vigorous, floppy growth when it is overfed. Watering during approved local restrictions should focus on the establishment period rather than creating a permanent daily routine.

Build a perennial mix that earns its space

Combine flowers, grasses and structural plants. Low growers form the front edge, medium-height perennials provide colour through the main flowering period, and taller species create a softer background. This layered arrangement looks more deliberate than a single mass of one plant and gives insects flowers at different times. Recorded height and spread are particularly valuable because they show how neighbouring plants will combine after a season or two.

Native species are often the simplest starting point. Depending on the region, options may include Australian daisies such as Brachyscome and Calotis, perennial everlastings such as Chrysocephalum, native grasses such as Microlaena, and tough flowering plants such as Lomandra or Indigofera. Australian garden centres commonly market these as waterwise or native selections. Familiar cottage-garden perennials can also work, provided they suit the climate and do not appear on local environmental weed lists.

Use flowering records to plan succession rather than expecting every plant to perform at once. The Perennials in Focus account of under-walnut planting guidance is a useful reminder that declining vigour may reflect the site rather than poor care. Its Chicago observations should not be transferred directly to Australian gardens, but the principle is sound: observe the complete growing cycle and treat unusual weakness as a clue to investigate soil, light and root competition.

Keep the meadow tidy without constant work

Once plants are established, replace weekly mowing with one or two well-timed cuts. Cut after most flowering has finished but before unwanted seedlings become widespread, and leave some stems standing over winter for wildlife. The best month varies by region: an autumn cut may suit Sydney and southern areas, while frost-prone districts may wait until the plants have collapsed naturally. Keep the cut high enough to protect crowns and leave the meadow looking structured rather than flattened.

Control weeds while the area is still small. Hand pulling, hoeing and a mulched border around the plot are usually more effective than repeated broad-spectrum spraying. Rake away the first year’s clippings if they create a heavy mat, then use a thin layer of compost as the plants fill the space. After this, annual weed pressure usually falls as the perennials occupy the soil.

Divide overcrowded clumps every few years and replace plants that decline. Good records of flowering date, colour, height and spread make it easier to identify which combinations worked. Native plants may still need water during prolonged drought, and recent plantings will require attention, so low-maintenance does not mean no maintenance. It means spending less time on frequent cutting, watering and corrective work once the planting has settled.

Test plants locally and share the results

Australian perennial trials should compare plants under local heat and rainfall patterns rather than relying entirely on overseas performance. Small trials can be organised through public gardens, councils, Landcare groups, garden clubs and local nurseries. Use several sites where possible, record failures as carefully as successes and observe plants through a full year. A plant that survives a wet winter may still lose its flowers during a hot, dry summer.

Clear information helps community trials become useful beyond their organisers. At a plant swap, accurate directions save volunteers time and prevent participants from visiting the wrong site; a guide to community collection locations illustrates how published addresses can guide visitors, while Australian events should provide their own council or nursery contacts.

The Australian retail market gives gardeners access to Australian-native strappy grasses, flowering groundcovers, daisies and drought-tolerant perennials, but labels do not always explain mature size or regional performance. Ask nurseries for the cultivar name, expected spread, flowering period and climate experience. Growers, landscapers and breeders can use the same observations to improve future selections. Sharing records with local garden groups also helps other gardeners avoid expensive trial-and-error and choose plants suited to their own patch.

Start with a small, clearly defined area rather than converting the whole lawn at once. Mark the border, select perennials already performing nearby, prepare the soil and set a first cutting date before planting. Keep a simple record of colour, height, spread and persistence, then exchange those observations with your local garden club, nursery or council. A modest first meadow provides useful evidence while creating a colourful, wildlife-friendly corner that can expand as confidence grows.

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.

Close-up of drooping orange and yellow spurred flowers with slender petals
Cluster of light purple daisy-like flowers with yellow centers
Tall spike of orange-yellow tubular foxglove flowers against blurred green
Cluster of small tubular orange-red flowers among green leaves