How to Grow More Strawberries from Runners

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How to grow more strawberries from runners is mostly a story about space and timing. Strawberries spread by sending out runners, which root and form daughter plants. Those daughters can refill a tired bed or start a new one, but only if the mother plants are healthy and the rows stay open. The University of California’s statewide pest management program, Iowa State Extension and Utah State Extension cover this from three angles: starting daughters, renovating the bed, and managing a matted row. They agree on the basics and differ on spacing, timing and feeding.

Quick answer

Let runners root into clean soil, and start daughter plants only from healthy mothers. The UC guide says to “Be sure to start daughter plants only from healthy mother plants”.
Dig the daughters in October, chill them for 10 to 15 days, then replant them into clean, prepared beds, as the UC guide describes.
Renovate the bed after fruiting, in late June or July for Iowa State, or right after harvest in the Utah guide.
Keep the rows narrow so runners do not crowd the plants, since crowding leads to smaller berries.

Start with healthy runners

Runners are the plant’s own way of spreading. The Iowa State guide says runners “will send out daughter plants to fill in the gaps” through the summer and fall, which is how a bed refills itself. The UC guide describes the simplest home method: let runners set daughter plants into clean soil in late summer. Once the daughters are started, the guide says to “remove all parts of the mother plants after the daughters are started”, so the old plant does not compete with the new ones.

The Utah guide raises a caution about reusing plants from an existing bed. It says “Resist the temptation to transplant from an existing bed”, because the new plants may carry viruses or root rot. Its advice is to “always start new beds with disease-free plants.” The guide also notes that “Once plants are infected, there is no treatment or cure.” That is a good reason to inspect the mother plants before you take any runners from them.

Dig, chill and replant the daughters

The UC method has a fixed order. Dig the new plants in October, and then “shake the soil from their roots, remove all but two healthy leaves, and place them in thin plastic sandwich bags.” Hold them in a refrigerator for 10 to 15 days, and then plant them into clean, prepared beds. Follow the steps in order, with the chilling before planting. For lifting the daughters, see best hand trowel options.

When you plant, the UC guide says to make sure you “spread the roots out before firming the soil around the plant”, and to “Keep the growing point above the soil line.” The Utah guide says the same thing from another angle: only the roots and the base of the crown should be covered, “leaving as much of the crown above ground as possible.” Water the new transplants in so the roots make good contact with the soil.

Spacing: the guides disagree

The UC guide spaces plants “about 12 inches apart in each row with rows about 12 inches apart in two-row beds,” and it staggers the rows so the plants have room. The Utah guide uses wider spacing for a matted row: plants “18 to 24 inches apart within the row, with rows three to four feet apart.” The Iowa State guide’s renovation strips should be “about 3 to 4 feet apart.”

These figures are for different jobs. The Utah guide expects the plants to knit into a continuous mat during the first season, so the wider spacing gives runners room to root. A bed you plan to keep tight will need the closer UC spacing and more attention to crowding.

Run a matted row in the first season

The Utah guide gives the clearest picture of runner management, and it is written for the matted row system. Bare-root plants go in early spring. “During the first growing season, blossoms and fruit are removed to promote runners and the formation of daughter plants.” Keep the soil surface within the row loose and moist, because that helps the daughters root. By the end of the first season, the daughters should form a continuous mat of plants within the row.

Crowding is the main risk. The Utah guide says “One problem with the matted row is that too many plants can form that compete with each other, resulting in smaller berries.” Its easiest fix is “narrowing the rows with cultivation”, and it gives an optimum row width of “about 8 to10 inches,” though “a 12 to 18 inch wide row may be more practical.” The Iowa State guide adds a related rule for runners that reach past the row: “These runners should be placed back within the allotted row or removed to prevent the bed from becoming a solid mat of plants.”

Renovate the bed every year

Renovation is what keeps runners working year after year. The Iowa State guide says renovation “helps control weeds, diminishes disease pressure, reduces plant crowding, and increases sunlight penetration to the crowns of the plants.” It also says renovation is best done in late June or July, once fruiting has ceased or the berries are too small to pick. The Utah guide says the rows should be renovated “immediately after harvest is complete”, so the two guides differ on timing.

The steps are straightforward. Clip or mow the foliage off the entire bed. The Iowa State guide says to “Use a rotary mower set to remove all leaf material 1 inch above the plant crowns”, and to “rake up the leaf debris and remove it from the area” for disease control. If the bed has grown too wide, the guide says to “till strips in the strawberry bed, leaving a roughly 12-inch strip of live strawberry plants”. That strip is what will refill the bed: “Runners will form and the new plants will create a 2-foot-wide matted row by the end of the summer.”

The Utah guide adds that renovation “should include removing weeds, cultivating to narrow rows, and fertilizing and irrigating to promote the formation and rooting of new daughter plants.” If the oldest plants are woody and crowded, it says you “may also choose to hand pull” them to make room for new daughters.

Feed and water the new growth

Feeding rates differ by source. The Iowa State guide gives a rate for a 100-square-foot bed: “A rate of around 0.25 lbs of urea (46-0-0), or 1.2 lbs of 10-10-10, is a common rate to apply to a 100-square-foot bed.” The Utah guide works by row length instead, with 5 to 8 pounds of 10-10-10 per 100 feet of row at renovation, then about 3 pounds in August to help flower buds form for the next season. Because the units differ, compare the two carefully before you copy either.

Water matters too. The Iowa State guide says “Strawberries require approximately 1 inch of water per week (either from rain or irrigation) for adequate growth”, and that irrigation in summer “encourages runner formation and flower bud development.” The Utah guide prefers “Drip or trickle irrigation”, and it says that “If using sprinklers, only irrigate in the morning to allow fruit and foliage to dry out in the afternoon.”

Keep weeds down and crowns covered

Weeds are the biggest problem in a strawberry patch. The Utah guide says “The most common limiting factor in the life of a strawberry patch is weeds”, because strawberries compete poorly for water and nutrients. The Iowa State guide says to “Control weeds in the strawberry planting by cultivating and hand pulling”, and to “Cultivate 1 to 2 inches deep to avoid damaging the roots of the strawberry plants.”

Crowns need care as the bed ages. The Iowa State guide notes that “As strawberry plants get older, their crowns get longer”, and that “Keeping soil around the crowns ensures better rooting, water uptake, and winter survival.” In older beds, it suggests raking about one inch of soil onto the crowns. For the cultivation the guides describe, see best garden hoe options.

Protect the bed through winter

Winter protection is simple. The Iowa State guide says “In mid-fall be sure to mulch over your strawberry beds, to protect your plants from extreme temperatures and desiccation from dry winter winds.” The Utah guide gives a depth: “Clean straw or shredded tree leaves should be spread over the bed in late November, to a depth of 3 to 6 inches.” The guide says this protection is needed in colder regions of its state. It also warns against heavy mulch: “Do not use heavy mulches such as grass clippings as these will smother the plants.”

Remove the mulch in spring. The Iowa State guide says to “remove the mulch when the plants start to put out new growth in the spring.” The Utah guide adds a warning about frost: “once the mulch is removed, the emerging flower buds are sensitive to frost.” Cover the rows on frosty nights if you can.

Replace tired plantings

Strawberry beds do not last forever. The UC guide says to “Replace your plantings with new plants from a nursery every 2 to 3 years.” The Utah guide adds that “Plant viruses are a common problem in strawberries”, and that old plantings with poor vigor should be removed. Starting fresh with clean plants is the surest way to keep the bed healthy.

Mistakes to avoid

Letting runners fill every gap. The Utah guide says too many plants compete and produce smaller berries, and the Iowa State guide says to place extra runners back in the row or remove them.
Burying the crown. The Utah guide says to leave “as much of the crown above ground as possible.”
Using heavy mulch. The Utah guide says grass clippings will smother the plants.
Reusing runners from a weak bed. The Utah guide advises starting new beds with disease-free plants.
Skipping renovation. The Iowa State guide says the bed should be renovated each year to control weeds and crowding.

Where the sources disagree

Three differences matter most. The first is starting stock: UC supports digging daughters from healthy mothers, while Utah says to avoid transplanting from an existing bed. The second is spacing, where UC uses about 12 inches, Utah uses 18 to 24 inches in the row, and Iowa State uses 3 to 4 feet between renovation strips. The third is timing: Iowa State says late June or July, while Utah says immediately after harvest. Pick the approach that fits your climate and your bed, and check your local extension office for regional timing.

How we chose

We searched for extension guidance on growing strawberries from runners and opened each candidate with curl. We kept three pages that returned HTTP 200 and discuss runners or renovation: the University of California’s statewide IPM page on planting strawberries, the Iowa State Extension renovation page, and the Utah State Extension guide on strawberries in the garden. We dropped a Tennessee publication, a Wisconsin extension PDF and a UConn PDF because they returned 404. We kept only sentences the pages state, and we noted where they differ.

What we could not verify

Each page has limits. The Utah guide is marked “Published October 2008”, and the Iowa State page was last reviewed in July 2023. The UC page shows no publication date. None of the three pages gives a count of daughters to keep per mother plant, and none gives a yield from a bed grown from runners. The Utah guide’s management systems are written for Utah conditions, so growers elsewhere should check local timing.

What the sources do not say

The sources do not give a number of daughter plants to keep per runner, and they do not say how many years a renovated bed will stay productive. The UC guide suggests replacing plantings every two to three years, while the other two guides give no fixed lifespan. None of the pages we opened recommends a product, and this guide does not either.

Frequently asked questions

When should strawberry daughter plants be dug up?

The UC guide says to dig the new plants in October, after letting runners set daughters in clean soil in late summer. Then chill them for 10 to 15 days before planting into clean, prepared beds.

Will daughter plants fruit the first year?

Plan on patience. The Utah guide says a matted row planting of June-bearing strawberries “will produce the first crop in the spring of the second growing season.” The first season is for building the mat.

How often should a strawberry bed be renovated?

The Iowa State guide says established beds should be renovated every year, in late June or July. The Utah guide says to renovate immediately after harvest, so check which timing fits your harvest and climate.

How many runners should a bed keep?

The sources do not give a count. The Iowa State guide says extra runners “should be placed back within the allotted row or removed”, and the Utah guide says crowding leads to smaller berries. Keep the row full, but not packed.

Should strawberries get mulch in winter?

Yes, in colder areas. The Iowa State guide says to mulch in mid-fall, and the Utah guide gives a layer of 3 to 6 inches of clean straw or shredded leaves in late November. Avoid heavy grass clippings, which the Utah guide says will smother the plants.

Sources

https://ipm.ucanr.edu/home-and-landscape/planting-strawberries/ (opened 2026-10-22)
https://yardandgarden.extension.iastate.edu/how-to/renovation-june-bearing-strawberries (opened 2026-10-22)
https://extension.usu.edu/yardandgarden/research/strawberries-in-the-garden.php (opened 2026-10-22)