Late winter is when perennials look quiet, but they are already getting ready under the soil. A few quick checks now can mean stronger shoots, fewer pests, and better blooms once spring warms up. We will focus on simple, low-stress jobs you can do in minutes, like clearing crowns, checking mulch depth, and spotting winter damage.
These eight checks are especially helpful for older clumps that seem slower each year, plus any plants you moved last season.
Why Late Winter Matters for Perennials
Late winter is the quiet window when perennials are still dormant but problems are easy to spot. Fixes you make now often prevent weak growth later.
Walk your beds and look for heaved crowns, where freeze and thaw cycles pushed roots up. Press them back into place and add 1 to 2 inches of compost around the plant, keeping it off the crown.
Check for standing water after rain or snowmelt, since soggy soil can rot crowns before spring even starts. Clear blocked drains, open up compacted spots with a garden fork, and pull back heavy mulch so the soil can breathe.
💧 Quick Late Winter Bed Check
- Heaved crowns: Look for roots pushed up by freeze and thaw. Press the plant back down gently.
- Compost placement: Add 1 to 2 inches around the plant. Keep compost off the crown.
- Standing water: Watch where puddles sit after snowmelt or rain. Soggy soil can rot crowns fast.
- Drainage fix: Clear leaves from drains and low spots. Open compacted soil with a garden fork.
- Mulch check: Pull back heavy mulch if it is matted and wet. Give the soil air so it can dry.
Bonus Tip: If you are unsure a plant is alive, scratch a stem or crown lightly with your fingernail. Green tissue usually means it is still viable.
1. How to Spot the First Hints of New Growth
New growth often shows up as tiny, lighter-colored buds at the crown where stems meet the soil. Look for small pointed “nubs” that feel firm, not mushy.
In late winter, brush aside loose mulch and leaf litter with your fingers so you can see the plant base clearly. Many perennials start with red, pink, or pale green tips that contrast with last year’s brown stubble.
Check after a mild spell, since warmth can trigger a quick change in just a few days. If you are unsure, gently scratch the surface of a stem or crown, green tissue underneath means it is alive. Avoid tugging on stems, because new shoots can snap off before you notice them.
💡 Quick checks before you prune
- Where to look: Focus on the crown, right where stems meet the soil.
- What “alive” feels like: New nubs feel firm and springy, not soft or slimy.
- Color clues: Watch for red, pink, pale green, or cream tips against old brown stems.
- The scratch test: Lightly scrape a stem or crown, green tissue underneath means it is living.
- What to avoid: Do not tug on stems, tiny shoots can snap off before you see them.
Bonus Tip: Check the same plant every few days after a mild spell, early growth can appear almost overnight.
2. Check the Crowns for Frost Lift
Freeze and thaw cycles can push perennial crowns up out of the soil. This is called frost lift.
Walk your beds and look for the “knuckle” of the plant sitting high, with roots showing or soil cracked around it. Pay extra attention to shallow-rooted perennials like heuchera (coral bells), Shasta daisy, dianthus, and young divisions. If you find a lifted crown, press it gently back into place on a mild day, then firm the soil around it with your hands.
Finish by tucking 1 to 2 inches of loose mulch or shredded leaves around, not on top of, the crown. This insulation helps reduce more heaving during late winter cold snaps.
🧤 A quick crown check that saves plants
- Best timing: Check after a thaw, when soil is soft enough to press back.
- What to look for: A raised “knuckle,” exposed roots, or a ring of cracked soil around the plant.
- Gentle fix: Use your palms to press the crown down, then snug the soil around it.
- Mulch placement: Tuck mulch around the crown, keep the very center open to avoid rot.
- Priority plants: Watch heuchera, dianthus, Shasta daisy, and small new divisions first.
Bonus Tip: If the ground is frozen solid, wait. Mark the spot with a bright stake so you remember to reset it on the next mild day.
3. Look for Moldy or Sunken Mulch
Moldy mulch can smother crowns and invite rot as perennials start to stir. Sunken mulch can trap water right where you do not want it.
Check beds near downspouts, shady corners, and along the north side of the house first. If you see a white crust, a sour smell, or slimy patches, pull that mulch back and bag it for the trash. Then rake the area lightly so the surface can dry and get some air.
If mulch has settled into a low ring around plants, fluff it up and level it out. Keep a clear space around each crown (about 1 to 2 inches) so new shoots do not push through wet mulch. Replace with a thin, fresh layer only if the soil surface is drying too fast.
🧤 Fast Mold Check, Then Fix the “Mulch Bowl”
- Start here: Check under downspouts, shady corners, and the north side first.
- Red flags: White crust, sour smell, or slimy patches usually means the mulch is holding too much moisture.
- What to remove: Pull back the bad mulch and bag it for the trash, do not compost it.
- Let it breathe: Lightly rake the surface so air and sun can dry the soil top.
- Protect the crown: Keep 1 to 2 inches clear around each plant crown so new shoots stay dry.
Bonus Tip: If the mulch feels heavy and cold, wait a few dry days before adding any fresh layer. Thin is better than thick right now.
4. Inspect Old Stems for Hidden Problems
Old stems can hide trouble that spreads fast once growth starts. A quick check now saves you a bigger mess later.
Look for cankers (sunken, dark, or cracked spots), soft areas, or peeling bark on last year’s stems. Scan for tiny holes and sawdust-like frass, which can point to borers, especially on hollow or pithy stems.
Run your fingers along the stem and bend it gently, healthy stems feel firm and springy. If you find blackened tips, mushy sections, or gray fuzzy growth, prune back to clean, green tissue and throw the cuttings in the trash. Wipe pruners with 70 percent alcohol between plants, especially after cutting anything suspicious.
🔎 Quick stem check, what to look for
- Cankers: Watch for sunken, dark, or cracked patches that look “pinched in.”
- Borer clues: Tiny holes plus sawdust-like frass near a node often means an insect is inside.
- Soft spots: If your thumb sinks in, that section is already failing and should be removed.
- Fuzzy growth: Gray or white “lint” on bark can signal rot or mold. Prune below it.
- Pruning target: Cut back to clean, green tissue. Make a smooth cut just above a healthy bud.
Bonus Tip: If you are unsure, cut a thin slice off the end. Healthy wood looks pale and moist, not brown or hollow.
5. Check for Root Heave Near Paths and Edges
Freeze and thaw cycles can push perennial crowns and roots upward near sidewalks, edging, and stone paths. This can leave roots exposed and dry.
Walk the hardscape line and look for crowns sitting higher than the surrounding soil, or for plants that suddenly lean away from the edge. Gently press the soil with your fingers to find air gaps under the crown.
If you find heave, tuck the plant back down so the crown sits at the same level it was last season. Firm the soil around it, then add 1 to 2 inches of shredded leaves or fine bark to protect it from the next cold snap.
💧 Quick root-heave check you can do in 2 minutes
- Where to look: Along sidewalks, driveways, edging, and stone paths where soil freezes and thaws faster.
- What you’ll see: Crowns sitting higher than the soil, exposed roots, or a plant that suddenly leans away from the edge.
- Finger test: Press gently around the crown to feel for air pockets or a “spongy” spot under the plant.
- Quick fix: Set the crown back to its old level, then firm soil in a ring around it so it does not wobble.
- Protective top layer: Add 1 to 2 inches of shredded leaves or fine bark, kept slightly back from the crown.
Bonus Tip: If the ground is frozen solid, wait for a mild afternoon to reset the plant. Forcing it can snap roots.
6. Test Soil Moisture After Freeze Thaw Cycles
Freeze thaw cycles can leave the soil wet on top and dry underneath. That tricks you into watering when you do not need to.
Use a trowel to check 3 to 4 inches down near the plant’s drip line, not right at the crown. If the soil clumps and feels cool, it is still moist, so skip watering for now. If it crumbles into dry dust, give a slow soak on a mild day so water can move down before the next freeze.
Watch for heaving. When soil repeatedly freezes and thaws, roots can lift slightly and dry out faster. After you check moisture, gently press the soil back around the plant, then add a thin layer of mulch to steady moisture without burying the crown.
💧 The quick “dig test” that prevents overwatering
- Best spot to check: Test near the drip line where feeder roots live, not right at the crown.
- Right depth: Go 3 to 4 inches down. Surface soil lies in winter.
- Moist soil signs: It feels cool and forms a soft clump. Hold off on watering.
- Dry soil signs: It crumbles and looks dusty. Plan a slow soak on a mild day.
- After freeze heave: Gently press soil back around the plant. Then add a thin mulch layer without covering the crown.
Bonus Tip: Water earlier in the day when temperatures are above freezing, so moisture can move down before nightfall.
7. Make Your “Before Spring” Walk a Simple Habit
Take ten minutes on a mild late winter day and do a slow loop around your beds with pruners and a small hand rake. Check crowns for frost lift, sniff out moldy or sunken mulch, and look closely at old stems for rot, borers, or lingering disease. Then feel the soil after a freeze thaw cycle and fix trouble spots now with a gentle re-cover, better drainage, or a light tidy.
These small checks give your perennials a clean, steady start, and you will see the payoff when new growth finally pops.
Frequently Asked Questions About 8 Perennial Checks to Do Before They Wake Up
1. When is the best time to do these perennial checks?
Late winter is ideal, before you see new shoots. Do the work on a mild day when soil is not frozen and not muddy.
2. How can I tell if a perennial is dead or just dormant?
Look for firm crowns and signs of life at the base, even if stems are dry. Scratch a stem near the bottom, if it is green inside, it is likely alive.
3. Should I cut back old stems now or wait?
Cut back dead, hollow, or matted stems before new growth starts. Leave a few inches if you need to mark where the plant is, especially for late risers.
4. What is the safest way to lift and divide crowded perennials?
Wait until the ground is workable and you can dig without smearing wet soil. Lift the clump, split it into smaller sections with healthy roots, then replant at the same depth.
5. Do I need to fertilize perennials before they wake up?
Most perennials do best with compost or a light, slow-release fertilizer as growth begins. Avoid heavy feeding in late winter, it can push weak growth at the wrong time.
6. How can I prevent slugs and other pests early in the season?
Clear away damp leaf piles and old mulch that hide pests near crowns. Put out barriers or baits as soon as you see new shoots, since damage happens fast.
7. How much mulch should I keep around perennial crowns right now?
Pull mulch back an inch or two from the crown so it stays drier and warms sooner. Keep the rest of the bed covered to reduce weeds and protect soil structure.
Daniel has been a plant enthusiast for over 20 years. He owns hundreds of houseplants and prepares for the chili growing seasons yearly with great anticipation. His favorite plants are plant species in the Araceae family, such as Monstera, Philodendron, and Anthurium. He also loves gardening and is growing hot peppers, tomatoes, and many more vegetables.