Dwarf St. Johnswort

Scientific Name: Hypericum mutilum L.


Classification: Plantae/ Tracheobionta / Spermatophyta / Magnoliophyta / Magnoliopsida / Dilleniidae / Theales / Clusiaceae / Guttiferae / Hypericum L./ Hypericum mutilum L.

Dwarf St. Johnswort
General Information
Usda SymbolHYMU
GroupDicot
Life CycleAnnualPerennial,
Growth HabitsForb/herb
Native LocationsHYMU

Plant Guide

Use a soil moisture meter to monitor the soil moisture where Dwarf St. Johnswort is planted.

Plant Traits

Growth Requirements

Temperature, Minimum (°F)-23
Adapted to Coarse Textured SoilsNo
Adapted to Fine Textured SoilsYes
Adapted to Medium Textured SoilsYes
Anaerobic ToleranceMedium
CaCO3 ToleranceLow
Cold Stratification RequiredNo
Drought ToleranceNone
Fertility RequirementMedium
Fire ToleranceLow
Frost Free Days, Minimum140
Hedge ToleranceNone
Moisture UseMedium
pH, Maximum7.2
pH, Minimum4.6
Planting Density per Acre, Maxim7000
Planting Density per Acre, Minim4800
Precipitation, Maximum55
Precipitation, Minimum30
Root Depth, Minimum (inches)8
Salinity ToleranceNone
Shade ToleranceIntermediate


Morphology/Physiology

After Harvest Regrowth RateSlow
ToxicityNone
Resprout AbilityNo
Shape and OrientationSemi-Erect
Active Growth PeriodSummer
BloatNone
C:N RatioMedium
Coppice PotentialNo
Fall ConspicuousNo
Fire ResistantNo
Flower ColorYellow
Flower ConspicuousNo
Foliage ColorGreen
Foliage Porosity SummerPorous
Foliage Porosity WinterPorous
Fruit/Seed ColorBrown
Nitrogen FixationNone
Low Growing GrassNo
LifespanShort
Leaf RetentionNo
Known AllelopathNo
Height, Mature (feet)2.6
Growth RateModerate
Growth FormSingle Crown
Fruit/Seed ConspicuousNo
Foliage TextureMedium


Reproduction

Vegetative Spread RateNone
Small GrainNo
Fruit/Seed AbundanceMedium
Seedling VigorMedium
Seed Spread RateSlow
Propagated by TubersNo
Propagated by SprigsYes
Propagated by SodNo
Propagated by SeedNo
Propagated by CuttingsNo
Propagated by ContainerNo
Propagated by BulbNo
Propagated by Bare RootNo
Fruit/Seed PersistenceNo
Fruit/Seed Period EndFall
Fruit/Seed Period BeginSummer
Commercial AvailabilityNo Known Source
Bloom PeriodMid Summer
Propagated by CormNo


Suitability/Use

Veneer ProductNo
Pulpwood ProductNo
Post ProductNo
Palatable HumanNo
Nursery Stock ProductNo
Naval Store ProductNo
Lumber ProductNo
Fodder ProductNo
Christmas Tree ProductNo
Berry/Nut/Seed ProductNo

Dwarf St. Johnswort

Dwarf St. Johnswort

Dwarf St. Johnswort

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