Tagetes tenuifolia (Signet Marigold, Striped Mexican Marigold)


Botanical Information

FamilyCompositae
GenusTagetes
Speciestenuifolia
CategoryAnnuals
OriginCentral Mexico to Columbia.

Details

USDA Hardiness Zone9
USDA Hardiness Ref.
Canadian Hardiness ZoneRequires cool season protection under glass
Canada Hardiness Ref.
RHS Hardiness ZoneH4 - H3
RHS Hardiness Ref.
Temperature (°C)-7 to -1
Temperature (°F)20 - 30
Height30 - 80 cm
Flowering PeriodJune, July, August

Description and Growing Information

LandscapeExcellent for flower beds and planters.
PropagationPropagate through seed sown in situ in spring. Plants begin to bloom 12 - 14 weeks later.
CultivationGrow in full sun in any moderately fertile and well-drained soil, deadheading to prolong blooming.
PestsNo serious pest or disease problems.
Notable SpecimensRoyal Botanical Gardens, Burlington, Ontario, Canada.
HabitatHorticultural origin.
Bark/Stem DescriptionStems are terete, and barely to extremely branched above.
Leaf DescriptionLeaves are pinnate, with 13 - 23 segments of 1 - 2 cm, very narrowly lanceolate and toothed.
Flower DescriptionFlowers appear in ray florets of 7 - 8 mm, with few yellow flowers. The number of florets varies greatly between individuals.
Fruit DescriptionFruit is to 7 mm with bristle-like hairs.

Photographs