Planting Narcissus in Raised Beds: Our Fall Reset

Lifted dahlia clumps resting on the edge of our raised bedSeparated dahlia tuber sections laid along the raised bed edges
Our lifted dahlia clumps and the separated tuber sections laid along the bed edges.

Time to plant

Planting narcissus in raised beds fit naturally into our fall cleanup. Our dahlias had been in the ground for two years, and we expected fresh tubers we could separate into more plantings. We were right: five plants gave us about 15 possible divisions across five varieties. With the clumps out, we added fresh soil and planted about 40 narcissus bulbs. Sometimes the timing is just there.

This is our current zone 9b garden work, with the results still ahead. The narcissus bulbs are planted. We are deciding whether the dahlias go back into their old bed or elsewhere in the garden, leaving room for tulips we have chilled since September.

What we used and researched options

Product links below are Amazon affiliate links. As an Amazon Associate, I earn from qualifying purchases.

Our narcissus bulbs came from Costco. The Amazon bulb selections below are researched alternatives, not the exact bulbs we planted. The bone meal matches the product in our photos.

ProductSizeKey specWhen we use itOur note
Mixed large-cup daffodil bulbs50 bulbsNarcissus mixFall plantingResearched alternative; ours came from Costco.
E.B. Stone Organics Bone MealCheck listing1-15-0Amending when neededThis is the product shown in our garden photos.
Votaniki decorative dahlia mixture3-packClumps of tubersStarting a new plantingResearched mix, not our five named varieties.

Phase 1: Digging and dividing our dahlias

What it is. Dahlias grow from tuberous roots, usually called tubers. Our five varieties are Ivanetti, Tiny Treasure, Lights Out, Duet, and Contraste. After two years, we had substantial clumps to work with rather than just the original planting pieces.

Specs that matter

In our bed: I found it easier to gently pull larger sections apart once the clumps were dry. We left the divisions fairly large instead of reducing everything to individual tubers. I wanted substantial pieces to replant.

The important check is the connection between tuber, neck, crown, and eye. UC Master Gardeners explain that the eye grows from the crown. Do not pull through a resistant connection just to make the pieces smaller. Our choice of larger sections is not a guarantee of more blooms.

Starting from scratch? This decorative mix is a researched tuber option, not a source for our named varieties. Check the selected mix, delivery season, and suitability for your garden.

Check price on Amazon: dahlia tuber mixture →

Phase 2: Fresh soil and bone meal

We used the open-bed opportunity to add fresh topsoil. About 15 cubic feet went between both boxes, This was backfill during a reset, not a complete refill or a new soil recipe.

Specs that matter

In our bed: We sprinkled the bone meal into each narcissus hole. The directions on the bone meal recommended about a teaspoon but we opted for a healthy pinch or about a teaspoon. We then covered the bulbs with fresh soil, and watered.

Bone meal supplies phosphorus. Before copying the amendment, check your soil and the bag directions. University of Minnesota Extension advises skipping added fertilizer when a soil test does not show a phosphorus or potassium deficiency. More amendment is not automatically better.

Check price on Amazon: E.B. Stone Bone Meal →
E.B. Stone Organics Bone Meal bag with a 1-15-0 label beside our bed
The bone meal we used. Follow the bag directions and your soil needs.

Phase 3: Planting narcissus in raised beds

Narcissus includes the flowers commonly called daffodils. We bought a standard bulk selection at Costco, without a named cultivar to report. The Amazon mix is an alternative for readers shopping online, not an identification of our bulbs.

Specs that matter

In our bed: We planted the bulbs 6 inches deep, covered them with soil, and watered. The 6-inch measurement is the entirety of the depth of the holes. It does not mean we put 6 inches of soil above each bulb's tip. For your planting, follow the depth and spacing given for the bulb size and variety you buy.

Check price on Amazon: narcissus bulb mix →

How to divide dahlias and plant narcissus

  1. Lift and rinse the established dahlias. We dug up five plants that had been in the ground for two years, then rinsed the clumps so we could see their structure.
  2. Dry and divide with care. We left the clumps in the shade for 24 hours. I gently separated them into larger sections, keeping crown material and eyes; protect the neck connecting each tuber to its crown.
  3. Refresh the open beds. We added about 15 cubic feet of topsoil across both boxes as fresh backfill while the dahlias were out.
  4. Lay out the narcissus planting. We planted about 40 Costco bulbs in one box, using holes about 6 inches deep and roughly 4 inches apart. Check the instructions for your own bulbs.
  5. Consider amendments before covering. We sprinkled about a teaspoon of bone meal into each hole. Treat this as our recorded practice; use your soil test and product label to decide whether an amendment is needed.
  6. Cover and water. We covered the bulbs with fresh soil and watered the planting. The narcissus is planted; the final location of our divided dahlias is still undecided.
Placing a narcissus bulb into a prepared hole beside the wire-lined well
Planting around the central well. The well construction is a separate garden project.

Anything to skip?

Nothing about this job felt difficult. I would not make division more complicated just to get the highest possible count of individual tubers. We kept larger pieces, and about 15 possible plantings from five plants was plenty. Propagating what is already growing can provide more planting material for a garden full of flowers.

The dried divisions went into paper bags while we decide their next location. We have not settled the tulip and dahlia layout, and we have not measured the next season's flowering. Those will be updates after the work and the blooms happen.

FAQ

How deep did we plant our narcissus bulbs?

We used holes about 6 inches deep, spaced roughly 4 inches apart. That describes the hole depth, not 6 inches of soil over the bulb tip. Follow the instructions for your bulb size and variety.

Do narcissus bulbs need bone meal?

Not automatically. We used about a teaspoon of E.B. Stone Organics Bone Meal in each hole. A soil test and the product label should guide additional phosphorus; our planting does not establish that every bed needs it.

Does every dahlia division need an eye?

Yes. A viable division needs crown material with at least one eye attached to a sound tuber through an intact neck. We kept larger sections, and Matt checked the retained divisions for eyes and crowns.

Will larger dahlia clumps guarantee more blooms?

No. We chose larger divisions because we wanted substantial pieces to replant. We have about 15 potential plantings from five original plants, but their survival and flowering have not been measured yet.

Can dahlias stay in the ground in zone 9b?

They may overwinter in suitable mild-climate conditions, but the zone alone does not guarantee success. Drainage and winter wetness matter. We lifted ours to divide the clumps and are still deciding where to replant them.

Furrow may earn a commission from links on this page. Garden notes reflect Matt's experience. Shopping options are researched unless identified as personally used. As an Amazon Associate, I earn from qualifying purchases.
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