Planting Perennials in Multiples - Pasquesi Home and Gardens (2024)

The eye perceives more color and texture when groupings of the same plant variety provide a continuous bridge from one part of the garden to the next. It’s also an easier way to fill in a large area. Maintenance is easier than if the same area is filled with individual specimens that require different care and have different bloom times. When planting in multiples, plant odd numbers (3, 5, 7) of the same plant varieties together or amass larger numbers in drifts or waves.

Piet Oudolf, Dutch garden designer of the Lurie Garden in Chicago’s Millennium Park, used drift planting as the designer of the ‘blooming blue river’ of Salvia at Millennium Park in Chicago. These hardworking perennials (below) have been included in successful gardens for years and will be sure to please for many years to come.

Classic Plants for sun/part sun:
Salvia ‘May Night’ (Meadow sage): A drought-hardy plant with lance-shaped, green leaves and spikes of small purple-blue flowers that bloom in spring-reaching 18″-24″ in height. Salvia thrives in a sunny area with well-drained soil. After its first bloom, cut back each spent bloom at the base and flowers will bloom again within a month. Choose from the many hardy varieties of Salvia.

Rudbeckia ‘Goldsturm’ (Black-eyed Susan): Plant drifts of this hardy plant with golden-yellow flowers with a brown/black eye. It is native to North America, blooms from mid-summer to fall and is pest-resistant. A nice cut flowers, too. Rudbeckia varieties are available in many different heights.

Sedum ‘Autumn Joy’ (Stonecrop): An adaptable and dependable plant with succulent-like leaves and flowers that bloom from August to November in deep pink to copper tones. They look wonderful with fall grasses as a background. Butterflies are also attracted to their flowers. Sedum love a sunny location with moist soil but are adaptable to a drier soil.

Sedum spectabile ‘Brilliant’ (Stonecrop): An old-fashioned perennial with cabbage-like, succulent leaves. Clusters of starry, hot pink flowers bloom in late summer through autumn. This compact plant prefers a sunny location with well-drained soil but can endure clay soil. It is extremely heat-tolerant and butterflies are attracted to its flower.

Hemerocallis ‘Stella de Oro’ (Dwarf daylily): Here’s a perennial that can live through all sorts of abuse. This perky daylily has buttercup-yellow flowers that will bloom all summer, once it gets started. Its small stature is perfect for containers, around a pool, patio or in the front of the border. They thrive in full to sun to partial shade and mature to a height of 18″ to 24″ tall. Deer tend to dislike them.

Coreopsis (Tickseed): Choose from many old-fashioned varieties of Coreopsis with daisy-like flowers that range from light yellow to gold with red markings. They bloom throughout the summer and butterflies love them, yet the deer do not.

Classic Plants for partial sun/shade:
Hosta sieboldiana ‘Elegans’ (Plantain Lily): ‘Elegans’is a classic, blue-gray-green hosta with 12″ rounded leaves. This hardy shade plant matures to 30″ tall over time. White flowers bloom in July through August on 40″ stems. This workhorse even tolerates dry shade.

Hosta ‘Francee’ (Plantain Lily): This hosta is an old favorite because it is so easy to grow. ‘Francee’ has dark green, heart-shaped leaves with white margins. The plant matures to a size of 2′ tall and 3′ wide. Lavender flowers bloom in early summer. It prefers moist, well-drained soil and is a very tolerant plant.

Astilbe x arendsii ‘Fanal’: Astilbe is a showy perennial for full to partially shady locations. This astilbe has garnet-red, feathery blooms and bronze-green foliage. It looks its best in mass plantings, blooming from mid-spring to summer in a consistently, moist soil. Matures to 2′ tall. Attracts butterflies and is deer resistant.

Astilbe x arendsii ‘Deutschland’: The flowers of this astilbe become feathery, white plumes and are real showstoppers in full to partial shade. The plants looks their best when planted in multitudes. They’ll bloom for weeks in summer with consistently moist soil. Matures to 1′ tall and 3′ wide. Attracts butterflies, yet is deer resistant. Perfect for borders, containers, very wet areas or even water gardens.

Planting Perennials in Multiples - Pasquesi Home and Gardens (2024)

FAQs

Can you plant multiple perennials together? ›

Maintenance is easier than if the same area is filled with individual specimens that require different care and have different bloom times. When planting in multiples, plant odd numbers (3, 5, 7) of the same plant varieties together or amass larger numbers in drifts or waves.

What is the rule of 3 in landscaping? ›

Three plants creates balance

If you have enough space, group them in an equilateral triangle. This looks particularly good with mounding or vertical plants. Be sure to leave some space between the plants, especially if they are three different kinds.

How do you arrange perennial plants in a garden? ›

In a one-sided planting bed, stair-step plant heights—tall plants in back, short ones in front. If your perennial garden design is a free-standing bed that will be viewed from all sides, put the tallest plants in the middle of the design and stair-step heights to bed edges.

How far apart should you plant perennials? ›

Know the size of the plant when it reaches maturity so the plant can be properly placed. A garden that is too densely planted is difficult to maintain. Plants whose mature height is 3' or above should be planted 2' to 3' feet apart, and plants 2' to 3' tall should be spaced 1.5' to 2' apart.

What are the rules for perennials? ›

Guidelines vary on how often to divide perennials. Most of them benefit from being divided every 3 to 5 years. Some perennials, such as chrysanthemums and most asters, may need to be divided more frequently. A few perennials, such as peonies, may not need to be divided at all.

What is the first rule of landscaping? ›

Rule 1: The House is the Most Important Part of Any Garden

It's almost always the largest, most dominant structure in the garden. Your journey starts and ends with the house and therefore any garden plan, should always start from the building and work outwards.

Does landscaping need to be symmetrical? ›

A balanced design is paramount in bringing a sense of equilibrium and peace that we long for in a garden. Symmetry is one method to bring balance into the garden, but it is not the only way. In fact, an asymmetrical design can also create harmony, if it's done in a balanced way.

What are the 3 major principles of landscape design? ›

Elements and Principles

The principles are the fundamental concepts of composition—proportion, order, repetition, and unity—that serve as guidelines to arrange or organize the features to create an aesthetically pleasing or beautiful landscape.

What do you add to soil when planting perennials? ›

Prepare Soil

Add as much organic matter to your planting area as you can. Use things like compost, old leaves, mushroom compost, shredded bark mulch, bark fines or composted manure. Perennials live in the same spot for many years. Adding lots of organic matter creates a base that helps plants thrive.

What month is best to plant perennials? ›

Planting. Most perennials should be planted in the fall or early spring. Fall planting gives the plant more time to become established before the start of active growth in the spring. Fall-planted perennials are usually well-established before hot weather.

How to properly plant perennials? ›

Dig a hole about 1.5 times the size of the container. Remove the perennial from the pot and carefully tease a few of the roots free from the root ball. Place the plant in the hole so it's slightly above the surrounding soil instead of below. Fill the hole in with soil and tamp down firmly all the way around the plant.

How long does it take for perennials to establish? ›

Most perennials take one to two years to establish, which means you can't expect flowers until the second or third year. Perennials bloom for only two to four weeks during the growing season, while annuals bloom for the entire season (spring to fall). Perennial flowers typically aren't as bright as annual flowers.

Can you plant multiple plants together? ›

Don't Limit Your Pots to Just One Plant

Pots with one type of plant inside adds a pop of color and simplicity to any garden design. However, mixing more than one type of potted plant in a container creates a mini-landscape with a variety of colors and textures.

Which perennials should not be divided? ›

Asclepias, Aquilegia, Baptisia, Paeonia, Platycodon and woody stemmed perennials such as Perovskia should not be divided or moved once planted. Before bringing out the shovel, read our guide below for tips on when and how to divide up your garden.

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