Planting a Perennial Garden (2024)

A Beautiful Garden Made Easy

Perennials encompass a wide variety of hardy, beautiful, and visually unique plants. Dependable when it comes to planting and transplanting, they're a perfect choice if you're new to gardening or are simply looking for a landscape with year-round appeal. Learn how to create a garden with flowers that come back every year with the tips below.

Select Your Perennial Garden Plants

Choose flowers with a reputation for being sturdy and dependable. Coneflowers, astilbes, coreopsis, creeping phlox, veronica, and black-eyed Susans are beautiful perennial flowers you can count on. Select a mix of tall and short plants. Plant tall ones in the back and short ones in front and along the sides of your garden bed.

Decide Where to Plant

Most people put their perennial gardens against a backdrop like fences and garden walls. Try to pick a spot that provides at least 6 hours a day of sunlight for your sun-loving plants. If your area is shadier, plant shade-lovers, such as hostas and bleeding hearts.

Get Your Soil Ready

Many perennial garden plantsneed soil with good drainage. Where your soil stays wet, plant cardinal flowers and other dampness-loving varieties. Enrich your soil with organic materials like compost or amend withMiracle-Gro® Garden Soil for Flowers & Vegetables.

Planting a Perennial Garden (1)

Get Planting

Perennials are tough plants. They're less fussy about when you plant them or move them. Most perennials can be planted any time from the last winter frost through autumn. When planting or transplanting, dig a hole that's twice as wide and no deeper than the container, then backfill the hole with soil. Make watering easier by grouping plants with similar water requirements together.

Perennial bulbs should be planted based on when they bloom. If you're looking ahead to springtime varieties, then be sure to put them in the ground in early fall. For perennial bulbs that bloom in summer, aim to plant them in early spring, once all chances of frost have passed. Always refer to the plant tag to get the proper planting depth and spacing.

For more information on planting spring bulbs, including when to plant according to your hardiness zone, check out this helpful article.

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Water and Feed Your Perennials

Young perennial plants may be hardy, but they still need plenty of water and nutrients to get established in the soil. You can easily water and feed at the same time withMiracle-Gro® Liquafeed®. When watering, avoid perennials' leaves to prevent disease, and aim for a soil consistency that is neither too wet nor too dry.

Care for Your Perennials

Deadhead your flowers by removing spent or misshapen blooms. This will encourage more flowers to grow. After your plants have matured, apply a pre-emergent weed preventer, such asMiracle-Gro® Garden Weed Preventer®, throughout your garden bed to help prevent weeds. Make sure to only apply the weed preventer near plants listed on the product label. Then, spread 3 inches of mulch around the plants, which will also help prevent weeds by blocking access to sunlight and keep soil moist. When your mature perennials are not in bloom, you can divide them and create starter plants to plant elsewhere.

Planting a Perennial Garden (2024)

FAQs

How do I arrange perennials in my 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.

What month should perennials be planted? ›

Perennial bulbs should be planted based on when they bloom. If you're looking ahead to springtime varieties, then be sure to put them in the ground in early fall. For perennial bulbs that bloom in summer, aim to plant them in early spring, once all chances of frost have passed.

How to prepare soil for a perennial garden? ›

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.

How long does it take for perennials to establish? ›

Even drought-tolerant plants need frequent deep watering until they are established. When getting established, plants need to be checked frequently, watered often and watched for signs of stress. Establishment can take one year for perennials and shrubs, and two years or more for trees.

How do you layer a perennial garden? ›

By thoughtfully incorporating foreground, middle-ground, and background plants, a gardener can create a vibrant and satisfying landscape. Also integrating concepts like mass, repetition, flow, scale, depth, and focal points enhances the layers and creates a rhythm that moves the eye through the garden.

What are the rules for perennials? ›

As a general guideline, perennials should be divided in the opposite season of which they bloom. That means if they bloom early in the season they should be divided in fall, and if they bloom late they should be divided in spring.

How many perennials to plant together? ›

Three plants creates balance

Though three can be tricky in human relationships, this number fits expertly in a landscape. The trick is in the arrangement. Three plants in a row is dull because you know what to expect. If you have enough space, group them in an equilateral triangle.

Should I mulch my perennial garden? ›

A really thick layer of mulch (6-8 inches) can be used to insulate fall-planted perennials from harsh winter conditions. If you apply a mulch blanket to newly planted perennials in late fall, make sure to remove it in early spring so the soil can warm up better as air temperatures rise.

How far apart should you plant perennials? ›

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 should I add to my soil before planting? ›

Adding large amounts of organic matter such as organic compost and manures will greatly improve the nutrient and water holding ability of these soils. Vegetables may be grown on heavier soils if they are well-drained. Heavier soils have clay particles which are smaller than sand and become quite hard.

Should you use Miracle-Gro on perennials? ›

Promote colorful, abundant flowers in your annuals and perennials by feeding them Miracle-Gro® Water Soluble Bloom Booster® Flower Food every 7 to 14 days, or Miracle-Gro® Shake 'n Feed® Rose & Bloom Plant Food every 3 months during the growing season.

How deep should soil be for perennials? ›

If the soil is fairly loose, digging a hole just slightly bigger than the plant root ball will be sufficient. If the soil has not been loosened up you'll want to dig a hole 1½ times the size of the root ball so that the roots can easily take hold in the soil.

What is the 3 year perennial rule? ›

Sleep, creep and leap

First year the plant will sleep, focusing growth on roots instead of the leaves and flowers. Second year the plant creeps, making some progress but not reaching full size. Third year the plant will leap into its full potential and deliver on the promises of the label or catalog listing.

What are the cons of planting perennials? ›

A couple of drawbacks to perennials are their longer yield times, with some taking years to bear a full bloom or crop. Furthermore, they can also be more susceptible to disease and are known to require more space than annuals.

How to space perennials? ›

The preferred spacing is usually a range, such as 18-24 inches. Planting closer will give you a fuller garden more quickly, but you will probably need to divide the perennials sooner.

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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