If your daffodils bloomed like mad a few years ago but now give you more leaves than flowers, September is the month to fix it. I’ve divided daffodils in tiny city plots, long border beds, and old cottage gardens where the bulbs had been left alone for nearly a decade, and the pattern is always the same: once clumps get crowded, bloom size drops, flower count falls, and the whole display starts to look tired. The good news is that daffodils are forgiving, and a careful hour or two in early autumn can completely reset them for spring.
What matters is not just lifting and splitting them, but doing it in the right order and with the right timing. Below, I’m walking through the full September job list I rely on, from checking whether the bulbs truly need dividing to replanting at the correct depth, spacing for larger drifts, and setting them up for stronger roots before winter. If you want fatter clumps, sturdier stems, and a much more generous show next spring, these are the steps worth taking seriously.
1. Confirm that your daffodils actually need dividing
Not every patch of daffodils needs to be disturbed every year. In my experience, most clumps benefit from division every 3 to 5 years, though vigorous varieties in rich soil may go longer and bulbs in shallow, dry, or crowded beds may need attention sooner.
The clearest signs are fewer flowers, lots of thin strappy leaves, several stems packed tightly into one fist-sized clump, or blooms that have become noticeably smaller than they were 2 or 3 springs ago. If you can see a dense ring of noses or old dried flower stems all emerging from an area less than 6 inches across, that’s usually a crowded clump that will respond well to lifting and replanting.
2. Pick the right September window
September is ideal because the summer heat has eased, but the soil is still warm enough for root growth. I aim for a dry or lightly overcast day when daytime temperatures are roughly 55 to 72 degrees Fahrenheit. That gives newly replanted bulbs time to settle before colder autumn weather arrives.
If the foliage died down naturally in late spring or early summer, you’re in good shape. Never cut the leaves early just to tidy up, because that foliage is what fed next year’s bulb. By September, the leaves should be yellowed, papery, and easy to remove. If they are still green and strongly attached, the bulbs are still processing energy and I’d wait a bit longer if your local climate allows.
3. Prepare the new planting area before you lift a single bulb
This is one of those practical steps that saves a surprising amount of stress. I always get the new bed or replanting area ready first so the bulbs aren’t sitting out for hours. Choose a spot with at least 6 hours of sun in spring. Daffodils can handle light shade in summer under deciduous trees, but poor spring light usually means fewer blooms.
Loosen the soil to about 10 to 12 inches deep. If your ground is heavy clay, mix in 2 to 3 inches of compost plus coarse grit or sharp sand to improve drainage. If it’s very sandy and dries quickly, add 2 inches of composted leaf mold or well-rotted organic matter to help hold moisture. Daffodils hate waterlogged winter soil more than almost anything else; rot is a bigger threat than cold.
4. Lift the clumps carefully so you don’t spear the bulbs
Use a garden fork rather than a narrow shovel if you can. I start 6 to 8 inches away from the outside edge of the clump and push the fork down a full 8 to 10 inches before levering upward. That wider margin reduces the chance of slicing through the bulbs, especially if they have multiplied into offsets you can’t see from above.
Once the clump is loose, lift it onto a tarp, trug, or patch of bare ground. Shake off excess soil gently with your hands rather than banging the bulbs hard against a border edge. Healthy daffodil bulbs should feel firm and weighty. If they’re soft, blackened, mushy, hollow, or smell sour, discard them immediately rather than replanting problems back into the bed.
5. Separate the bulbs properly, including the smaller offsets
Daffodils usually divide into a main bulb surrounded by offsets, which are the smaller daughter bulbs attached at the base. Many come apart easily with your fingers. If they resist, don’t forcefully tear the basal plate, which is the flat bottom from which roots grow. I twist gently and only separate bulbs that detach with reasonable pressure.
Large offsets, about 1 inch across or bigger, often flower within 1 to 2 springs after replanting. Tiny offsets may need 2 to 3 years to reach blooming size. I still replant the smaller ones, but I usually group them in a nursery row or less prominent section of the border so my prime spring display spaces go to the largest bulbs.
6. Clean and sort bulbs by size and condition
After separation, remove dead roots, flaky outer tunic pieces, and any remaining dry foliage. You don’t need to peel them bare. I just tidy them enough to inspect each bulb. Keep only firm bulbs with intact basal plates and no obvious mold, cuts, or soft spots.
I sort into three piles: flowering-size bulbs, medium bulbs, and small offsets. The flowering-size bulbs are the stars and go into the main display positions. Medium bulbs can bulk up quickly with good spacing and feeding. The smallest bulbs are best planted in a reserve bed 4 to 5 inches apart, where they can grow on without messing up the look of a formal drift.
7. Improve the planting hole with the right soil balance, not too much rich feed
Daffodils appreciate fertile soil, but I’ve seen gardeners overdo high-nitrogen amendments and end up with lush leaves instead of strong flowering. What I prefer in September is a balanced, bulb-friendly base: crumbly soil, reliable drainage, and a modest amount of phosphorus and potassium.
If your soil is average, work in compost and add a low-nitrogen bulb fertilizer according to label rates, often around 1 to 2 tablespoons per 1 square foot or roughly 4 to 8 ounces per 10 square feet, depending on the product. Bone meal is often suggested, but it’s only useful if your soil truly lacks phosphorus, and in some gardens it can attract digging animals. Good structure matters more than any miracle feed.
8. Replant at the correct depth for bigger, steadier blooms
The basic rule I use is to plant bulbs at a depth about 3 times the height of the bulb. For many standard daffodils, that works out to roughly 6 inches deep from the base of the bulb to the soil surface, sometimes 7 inches for large bulbs in lighter soil. Miniature varieties may be planted a bit shallower, often 4 to 5 inches deep.
Planting too shallowly is one of the most common reasons bulbs split into lots of small non-flowering bulbs over time. Shallow bulbs also dry out faster and can be pushed upward by freeze-thaw cycles. Set each bulb point-up, roots down, and firm the soil gently around it so there are no large air pockets.
9. Space them generously instead of cramming them back together
If you want “massive blooms,” resist the temptation to recreate the same crowded clump you just fixed. Large daffodil bulbs should usually be spaced 5 to 6 inches apart center to center. Smaller bulbs can go 3 to 4 inches apart in a grow-on area. That little bit of breathing room gives each bulb enough light, nutrients, and root space to bulk up properly.
For a natural-looking drift, I toss a handful of bulbs lightly and plant them where they land, adjusting only if any end up closer than about 4 inches. In a formal border, I stagger them in triangles rather than rigid rows. Even spacing looks more generous in spring, and the flowers sit better visually when they aren’t packed shoulder to shoulder.
10. Water them in deeply, then don’t keep the bed soggy
Once replanted, water thoroughly so the soil settles around the bulbs and root growth begins. I like to soak the area to a depth of about 6 inches, which generally means a slow, deep watering rather than a quick surface splash. In many gardens, that’s roughly 1 inch of water.
After that, only water if autumn is unusually dry. Daffodils need moisture to root in, but they do not want constantly wet ground. If September and October are giving you regular rain, leave them alone. Overwatering newly replanted bulbs in heavy soil is one of the fastest ways to create rot before winter ever starts.
11. Mulch lightly after planting, especially in colder or drier areas
A light mulch helps regulate soil temperature and slows weed growth without smothering the bulbs. I use 1 to 2 inches of shredded leaves, fine bark, or compost after the soil has been watered in. Keep it loose rather than packing it down.
In very cold regions, that mulch can also reduce repeated freezing and thawing. In milder climates, it mainly helps preserve moisture and keeps the planting area from crusting over. Just don’t pile on 4 or 5 inches of dense mulch right away; too much can trap excess moisture and make the area too damp for healthy bulbs.
12. Mark the area so you don’t dig them up by accident
This sounds simple, but it matters. Once the bulbs are in and the bed settles for winter, it’s surprisingly easy to forget exactly where they were replanted. I’ve seen freshly divided daffodils accidentally skewered during autumn perennial planting more times than I care to admit, including once in my own garden when I got overconfident.
Use a weatherproof plant label, short bamboo canes, or a simple sketch in your garden notebook. If you planted several cultivars, note their color, height, and expected bloom season. That record becomes very useful in spring when you decide which groups deserve expansion and which should be moved again in future years.
13. Protect bulbs from squirrels and other diggers if they’re a problem in your garden
Daffodils are less tempting to deer and rodents than tulips because they contain alkaloids that many animals dislike, but freshly disturbed soil still attracts curious digging. Squirrels in particular seem to treat a newly planted bed as a personal challenge.
If that’s an issue where you live, lay a piece of chicken wire or plastic garden mesh flat over the bed and peg it down until the soil settles and autumn rains reduce the scent of disturbance. Remove it before shoots push up in late winter or early spring. A thin mulch layer on top also helps disguise the fresh digging.
14. Feed again at the right time next year for repeat performance
September division sets the stage, but spring follow-up is what turns a one-time improvement into years of strong flowering. When shoots first emerge next year, apply a balanced bulb feed or a low-nitrogen granular fertilizer around the clumps, watered in if the soil is dry. I usually feed just as the green tips are 2 to 3 inches tall.
Then, after flowering, deadhead spent blooms but leave the foliage alone until it yellows naturally, which can take 6 to 8 weeks. That post-bloom leaf period is when the bulbs recharge. If you braid, tie, or cut the leaves early, you’re undoing much of the benefit of dividing them in the first place.
15. Know what kind of results to expect next spring
Large, healthy, replanted bulbs often flower very well the first spring after division, especially if they were split in September and settled into warm soil before winter. You should expect cleaner clumps, better stem spacing, and a more even display. What you may not see immediately is full flowering from every small offset; those younger bulbs need time.
For the biggest overall show, think in two layers: instant impact from mature bulbs and future abundance from the smaller ones maturing in the background. That’s how I approach old daffodil colonies. One careful September reset can give you a better spring within months, and if you keep spacing, drainage, and foliage care right, the display usually gets stronger for the next 2 to 4 years after that.