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Rosa multiflora

Baby Rose · Japanese Rose · Many-flowered Rose · Multiflora Rose

Family RosaceaeGenus Rosa

Clusters of small white roses with yellow-brown stamens, opening from pink-tipped buds on bristly red stalks.
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About the plant

What it is and where it grows — not part of any germination protocol.

The plant

Habit
Rose, ShrubExtension Gardener Plant Toolbox
Habit
scrambling shrub or lianaPlants of the World Online
Height
10-15 ft3-4.6 mExtension Gardener Plant Toolbox
Spread
14-15 ft4.3-4.6 mExtension Gardener Plant Toolbox
Flower
Pink, WhiteExtension Gardener Plant Toolbox
Blooms
Spring, SummerExtension Gardener Plant Toolbox
Native range
China North-Central, China South-Central, China Southeast, East Himalaya, Japan, KoreaGBIF Backbone Taxonomy

Growing conditions

Sun
Full sun; Partial ShadeExtension Gardener Plant Toolbox

Toxicity is noted only where a source states it. No note here is not a finding of safety.

Sources: Extension Gardener Plant Toolbox — NC State Extension; Plants of the World Online — Royal Botanic Gardens, Kew; GBIF Backbone Taxonomy — Global Biodiversity Information Facility.

Worth knowing

  • Brought to North America from Asia for soil conservation, as a hedge for grazing land and to attract wildlife, it is now an invasive species in the east. Wikipedia: Rosa multiflora

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty High Rated by us, not by the source.

Start around February 8, 2027 for a May 3 last frost.

  1. Clean the flesh off the seed

  2. Leach in running water

    Duration: 7 days

    Washed and cleaned daily for 7 days.

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  4. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    3 germinated in this phase.

  5. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  6. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

Steps after step 3 run on after germination.

7 days from start to step 3. Germination happens during step 3, in 49 days.

26% germination in 35–49 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Rosa p. 207Public domain
Show the original text
Rosa (Rosaceae). Germination -occurs largely at 40 and extends in an erratic manner over several cycles. All seed was WC 7 d. Although the seed coat is hard, grinding a hole through it did not initiate germination. In view of the results with two of the four species, outdoor treatment should be tried on the other two. A. multiflora germ. best in 40(26% in 5-7 w)-70(3%)-40-70. Germination is less in 70(8%)-40-70(3%)-40-70(3%) and less in seed sown outdoors (6% germ. in April). Seed DS 6 m at 70 or 40 was all dead.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Rosa p. 207. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

Protocol 2

DerivedN. C. Deno, 1993

Difficulty Very high Rated by us, not by the source.

Start around March 8, 2027 for a May 3 last frost.

  1. Clean the flesh off the seed

  2. Leach in running water

    Duration: 7 days

    Washed and cleaned daily for 7 days.

  3. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  4. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  5. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    3 germinated in this phase.

  6. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  7. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    3 germinated in this phase.

Steps after step 3 run on after germination.

7 days from start to step 3. Germination happens during step 3; time not stated, 21 days assumed.

8% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Rosa p. 207Public domain
Show the original text
Rosa (Rosaceae). Germination -occurs largely at 40 and extends in an erratic manner over several cycles. All seed was WC 7 d. Although the seed coat is hard, grinding a hole through it did not initiate germination. In view of the results with two of the four species, outdoor treatment should be tried on the other two. A. multiflora germ. best in 40(26% in 5-7 w)-70(3%)-40-70. Germination is less in 70(8%)-40-70(3%)-40-70(3%) and less in seed sown outdoors (6% germ. in April). Seed DS 6 m at 70 or 40 was all dead.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Rosa p. 207. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

How each step is done, in Deno’s words, and what Verified and Derived mean.

Germination trials

Readers’ own records of sowing this species, published after review. Share your trial · All trials

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