by Steve Glor on Nov 25, 2024

Perennials: Dividing, Transplanting, Cutting Back, & Clearing Beds

What Are Perennials, and Why Are They Essential for Your Garden?

Perennials are plants that live for multiple years, returning each season to bring fresh color and life to the garden. Unlike annuals, which die off after one season, perennials establish themselves in the garden, allowing for larger, more permanent planting arrangements.
Advantages of Growing Perennials: Beyond their long lifespan, perennials are lower maintenance and generally require less water and fertilizer after establishment. They’re also excellent for pollinators, offering bees, butterflies, and birds reliable resources year after year. Popular choices include peonies, hostas, daylilies, and coneflowers, each bringing unique colors, textures, and seasonal blooms.

When and Why to Divide Your Perennials

Dividing is essential for keeping perennials vibrant, and it’s not as tricky as it sounds. Over time, many perennials become overcrowded, which can lead to reduced blooms, slower growth, and competition for nutrients.
Signs It’s Time to Divide: If you notice your perennials flowering less or they’re starting to look congested, it’s time to divide. Some plants will even “bald” in the center—a sure sign they need space to stretch.
Best Seasons for Dividing: The ideal time for dividing depends on the plant. Spring bloomers, like irises and peonies, benefit from dividing in fall, while late summer bloomers, like hostas, should be divided in early spring.
Benefits of Dividing Perennials: Dividing is like a spa day for your plants. It refreshes their growth, helps them bloom more, and even gives you extra plants to spread around or gift to friends.

Step-by-Step Guide to Dividing Perennials

garden kneeler bundle for gardening chores
If it’s your first time dividing perennials, don’t worry! Here’s a quick guide to make it easy.
  1. Gather Your Tools: A garden fork, spade, a sharp knife, or pruning shears will do the trick. Yard Butler's Terra Tool collection is perfect for this chore, with a variety of blades on two-in-one tools that are balanced for gardening.
  2. Prepare the Plant and Soil: Water the area well the day before to make digging easier. Loosen the soil around the plant with a fork or spade.
  3. Divide According to Root Type:
    1. Clumping Perennials (like hostas): Slice through the clump with a knife, ensuring each section has a healthy amount of roots and shoots.
    2. Spreading Perennials (like bee balm): These can often be pulled apart with your hands or a trowel.
  4. Replant or Pot: Transplant the new divisions immediately to prevent drying. Keep soil moist to encourage settling in.

Transplanting Perennials Without the Stress

Transplanting lets you rearrange or fill in gaps in your garden, but timing and technique are key to prevent stressing your plants.
Why Transplanting is Necessary: Maybe your perennials have outgrown their space, or you’re redesigning your garden layout. Moving perennials can bring new life to both the plant and its surroundings.
When to Transplant: Cool seasons—early spring and fall—are best for transplanting. This way, the plants aren’t struggling against heat while they establish new roots.

Steps for a Successful Transplant:

  1. Prepare the New Location: Dig a hole slightly larger than the root ball and enrich it with compost.
  2. Lift and Transport: Gently dig around the plant and lift it with the root ball intact.
  3. Replant and Water Well: Place the plant in the new hole at the same depth as before. Water generously to settle it in.

Cutting Back Perennials: Timing, Techniques, and Tools

lavender perennial in pot
Cutting back is a simple yet crucial task to keep your perennials tidy, encourage new growth, and prevent disease.
Why It’s Important: Cutting back helps channel the plant’s energy into the root system instead of spent blooms, producing a fuller and healthier plant.
When to Cut Back: Timing varies by plant:
  • Summer Bloomers (like lavender): Cut back in early spring to remove winter-killed branches.
  • Fall Bloomers (like asters): Prune in late fall to tidy up and prepare for winter.
Cutting Back Tips: Trim perennials to just a few inches above ground. For plants with softer stems, scissors or pruning shears work fine, but for woodier perennials, a sharp pruner is best.

Clearing Your Perennial Beds: How to Prepare for Next Season

Clearing beds is one of the best steps you can take to ensure your garden wakes up healthy in spring. By removing debris, dead foliage, and old mulch, you’re setting the stage for a pest-free, fertile garden.

Seasonal Bed Clearing Tips:

  • Fall: Remove dead foliage and add a fresh layer of mulch to insulate roots. Yard Butler's World's Greatest Shrub Rake is perfect for clearing around bedding plants. The spring steel tines lift the dead leaves without ruining the plants below.
  • Spring: Clear any winter residue and refresh mulch to lock in moisture.
Soil and Mulching Considerations: After clearing, add compost or organic matter to feed the soil. Top off with a new layer of mulch to keep moisture in and weeds out.

Common Mistakes to Avoid When Caring for Perennials

Even experienced gardeners can make a few missteps with perennials. Here are some common mistakes to avoid:
  • Overcrowding and Neglecting Division: Dividing perennials every 2–3 years prevents overcrowding and keeps plants thriving.
  • Poor Timing for Cutting Back and Transplanting: Cutting back or transplanting at the wrong time can stress your plants or stunt growth.
  • Ignoring Soil Quality: Healthy soil makes for healthy perennials. Add organic matter each year to keep it nutrient-rich.

FAQs About Perennial Care

Q: Can I divide perennials too often?
A: Yes, dividing too frequently can stress plants. Generally, every 2–3 years is ideal.
Q: How do I know if my perennials survived transplanting?
A: Check for new growth within a few weeks; drooping may occur but should subside once roots settle.
Q: What’s the best time of year to cut back?
A: Cut back most perennials in fall, though some benefit from early spring trimming instead.

With these tips, you’re ready to master the art of caring for your perennials, keeping your garden lush and lively year after year. So get your tools, find a sunny day, and give those plants the TLC they deserve—they’ll reward you with endless beauty and blooms!