Bloom Clock/Keys/Southeastern Pennsylvania/September/White Flowers

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The plants pictured below have been recorded as blooming during the month of September in Southeastern Pennsylvania.


Cichorium intybus

Heads

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Profile for Cichorium intybus (Chicory)
Identifying Characteristics
Habit: Erect perennial, foliage primarily basal but with some cauline leaves
Flowers: Radiate heads, both disk and ray florets typically blue but sometimes white
Life Cycle: perennial
Similar Plants: Basal foliage in spring is often mistaken for Taraxacum officinale
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Global data:
Temperate zone season(s): Late Spring, Early Summer, Mid Summer, Late Summer, Early Fall, Mid Fall

Regional data and additional images for Cichorium intybus

Daucus carota

Umbel

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Profile for Daucus carota (Carrot, Queen Anne's Lace)
Identifying Characteristics
Habit: Upright herbaceous plant
Flowers: Umbels of white flowers, with one dark red to black flower in the center.
Foliage: Pinnatifid
Life Cycle: Biennial
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Global data:
Temperate zone season(s): Late Spring, Early Summer, Mid Summer, Late Summer, Early Fall

Regional data and additional images for Daucus carota

Trifolium repens

Inflorescence

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Profile for Trifolium repens (White Clover)
Identifying Characteristics
Habit: Low, spreading herbaceous plant
Foliage: Trifoliate
Stem: Creeping, rooting at the nodes
Life Cycle: perennial
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Global data:
Temperate zone season(s): Mid Spring, Late Spring, Early Summer, Mid Summer, Late Summer, Early Fall

Regional data and additional images for Trifolium repens

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Saponaria officinalis

A white-flowered variety

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Profile for Saponaria officinalis (Soapwort)
Identifying Characteristics
Habit: Upright herbaceous plant
Scent: Flowers are sweetly scented
Life Cycle: Perennial
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Global data:
Temperate zone season(s): Mid Spring, Late Spring, Early Summer, Mid Summer, Late Summer, Early Fall

Regional data and additional images for Saponaria officinalis

Petunia x hybrida

Flowers

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Profile for Petunia x hybrida (Petunia)
Identifying Characteristics
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Regional data and additional images for Petunia x hybrida

Eupatorium perfoliatum

Flowering plant

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Profile for Eupatorium perfoliatum (Boneset)
Identifying Characteristics
Habit: Erect herbaceous plant
Foliage: Opposite, hairy, clasping the stem
Life Cycle: Perennial
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Regional data and additional images for Eupatorium perfoliatum

Aster novae-angliae

Head

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Profile for Aster novae-angliae (New England Aster)
Identifying Characteristics
Habit: Erect, bushy herbaceous plant
Flowers: Heads with yellow disk florets and purple (sometimes pink, white, or red) rays
Foliage: Simple, alternate
Life Cycle: Perennial
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Global data:
Temperate zone season(s): Late Spring, Early Summer, Mid Summer, Late Summer, Early Fall, Mid Fall

Regional data and additional images for Aster novae-angliae

Aster lateriflorus

Illustration

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Profile for Aster lateriflorus (Calico Aster)
Identifying Characteristics
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Aster ericoides

Heads

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Profile for Aster ericoides (Heath Aster)
Identifying Characteristics
Habit: freely branched
Flowers: heads with white ray florets
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Regional data and additional images for Aster ericoides

Aster divaricatus

Heads

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Profile for Aster divaricatus (White wood aster)
Identifying Characteristics
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Global data:
Temperate zone season(s): Mid Summer, Late Summer, Early Fall, Mid Fall

Regional data and additional images for Aster divaricatus

Achillea millefolium

Heads

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Profile for Achillea millefolium (Common Yarrow)
Identifying Characteristics
Habit: Upright, clump-forming
Flowers: Heads
Foliage: Pinnatifid
Life Cycle: Perennial
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Global data:
Temperate zone season(s): Mid Spring, Late Spring, Early Summer, Mid Summer, Late Summer, Early Fall, Mid Fall

Regional data and additional images for Achillea millefolium

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Polygonum sagittatum

Inflorescences

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Profile for Polygonum sagittatum (Arrowleaf tearthumb)
Identifying Characteristics
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Regional data and additional images for Polygonum sagittatum

Melilotus alba

Flowering plant

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Profile for Melilotus alba (White Sweet Clover)
Identifying Characteristics
Habit: Erect, herbaceous
Flowers: White, pea-like
Foliage: Trifoliate
Stem: Erect
Scent: Crushed leaves have a vanilla scent
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Global data:
Temperate zone season(s): Late Spring, Early Summer, Mid Summer, Late Summer, Early Fall

Regional data and additional images for Melilotus alba

Hemerocallis

Flower of H. fulva, one of the most commonly encountered daylilies

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Profile for Hemerocallis (Daylily)
Identifying Characteristics
Habit: clumping herbaceous plant
Flowers: 3 petals and 3 sepals nearly equal. Each flower lasts only one day.
Foliage: Basal, straplike
Life Cycle: Perennial
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Global data:
Temperate zone season(s): Late Spring, Early Summer, Mid Summer, Late Summer

Regional data and additional images for Hemerocallis

Gaultheria procumbens

Gaultheria procumbens in flower

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Profile for Gaultheria procumbens (Eastern Teaberry, Checkerberry, Boxberry and American Wintergreen)
Identifying Characteristics
Habit: Erect/creeping
Flowers: Bell-shaped, 6–8 mm long, white, borne solitary or in short racemes.
Foliage: Elliptic to ovate, 2–5 cm long and 1–2 cm broad
Stem: Round, 10–15 cm tall
Scent: Distinct oil of wintergreen scent.
Growing Conditions: Dry to moist acidic soils; forests; sandy areas
Fruit: Edible berry 8–15 mm in diameter persists through the winter until new blossoms form.
Life Cycle: Perennial
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Global data:
Temperate zone season(s): Early Summer, Mid Summer

Regional data and additional images for Gaultheria procumbens

Nicotiana sylvestris

Flowering plant

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Profile for Nicotiana sylvestris (Flowering Tobacco)
Identifying Characteristics
Habit: Upright herbaceous plant
Flowers: Tubular, white
Foliage: Large, simple leaves, sticky.
Stem: Sticky
Fruit: sticky, 4-valved capsules.
Life Cycle: Annual
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Regional data and additional images for Nicotiana sylvestris

Viola x wittrockiana

A Purple-flowered variety

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Profile for Viola x wittrockiana (Pansy)
Identifying Characteristics
Habit: Short-lived, low-growing perennial, with mostly cool season blooms
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Global data:
Temperate zone season(s): Late Winter, Early Spring, Early Summer, Late Summer, Early Fall, Mid Fall, Late Fall

Regional data and additional images for Viola x wittrockiana

Solanum carolinense

Flowering plant

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Profile for Solanum carolinense (Horsenettle)
Identifying Characteristics
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Regional data and additional images for Solanum carolinense

Agastache foeniculum

Inflorescences

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Profile for Agastache foeniculum (Wild Hyssop)
Identifying Characteristics
Flowers: Small tubular flowers on an upright spike
Foliage: simple, opposite
Stem: Square in cross section
Life Cycle: Perennial
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Regional data and additional images for Agastache foeniculum

Phytolacca americana

Inflorescence

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Profile for Phytolacca americana (Pokeweed)
Identifying Characteristics
Habit: Upright, bushy, herbaceous plant
Life Cycle: Perennial
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Global data:
Temperate zone season(s): Late Spring, Early Summer, Mid Summer, Late Summer, Early Fall

Regional data and additional images for Phytolacca americana

Chelone glabra

Flowers

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Profile for Chelone glabra (White Turtlehead)
Identifying Characteristics
Habit: Upright herbaceous plant
Flowers: Dense spikes of "hooded" white flowers
Foliage: Simple, opposite
Growing Conditions: Moist soils in sunny locations
Life Cycle: Perennial
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Global data:
Temperate zone season(s): Mid Summer, Late Summer

Regional data and additional images for Chelone glabra

Plantago major

Flowering spike

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Profile for Plantago major (Broadleaf Plantain)
Identifying Characteristics
Flowers: On dense spikes
Foliage: Basal, rounded with prominent veins
Growing Conditions: Common on compacted soil
Life Cycle: perennial
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Global data:
Temperate zone season(s): Late Spring, Early Summer, Mid Summer

Regional data and additional images for Plantago major

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Fallopia japonica

Flowering branch

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Profile for Fallopia japonica (Japanese Knotweed)
Identifying Characteristics
Flowers: The flowers are small, creamy white, produced in erect racemes 6–15 cm long in late summer and early autumn.
Foliage: The leaves are broad oval with a truncated base, 7–14 cm long and 5–12 cm broad, with an entire margin.
Stem: hollow stems with distinct raised nodes that give it the appearance of bamboo
Life Cycle: Perennial
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Global data:
Temperate zone season(s): Mid Summer, Late Summer

Regional data and additional images for Fallopia japonica

Conyza canadensis

Heads and fruits

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Profile for Conyza canadensis (Horseweed)
Identifying Characteristics
Habit: Upright herbaceous plant
Flowers: Heads, usually appearing "closed". Fruits present while later flowers are opening.
Foliage: Simple
Stem: Stiff, densely covered by the leaves
Life Cycle: Annual
General information: Synonymous with Erigeron canadensis
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Global data:
Temperate zone season(s): Early Summer, Mid Summer, Late Summer

Regional data and additional images for Conyza canadensis

Tanacetum parthenium

Heads

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Profile for Tanacetum parthenium (Feverfew)
Identifying Characteristics
Habit: Erect, bushy herbaceous plant
Flowers: Heads with yellow centers and white rays
Foliage: Simple, pinnately lobed
Life Cycle: perennial
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Global data:
Temperate zone season(s): Late Spring, Early Summer, Mid Summer, Late Summer, Early Fall

Regional data and additional images for Tanacetum parthenium

Persicaria maculosa

Inflorescence

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Profile for Persicaria maculosa (Lady's Thumb)
Identifying Characteristics
Habit: Erect herbaceous plant
Flowers: On dense terminal spikes with a pink calyx and white corolla
Foliage: Simple
Life Cycle: Annual
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Global data:
Temperate zone season(s): Late Spring, Early Summer, Mid Summer, Late Summer, Early Fall, Mid Fall

Regional data and additional images for Persicaria maculosa

Erechtites hieracifolia

Heads

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Profile for Erechtites hieracifolia (Fireweed)
Identifying Characteristics
Habit: erect forb
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Regional data and additional images for Erechtites hieracifolia

Dahlia

Flower of cv. 'Autumn Fairy'

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Profile for Dahlia (Dahlia)
Identifying Characteristics
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Regional data and additional images for Dahlia

Ocimum basilicum

Inflorescence

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Profile for Ocimum basilicum (Sweet Basil)
Identifying Characteristics
Habit: Upright, branching herb
Flowers: Tubular, white
Foliage: Simple
Scent: Distinct scent of Basil
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Global data:
Temperate zone season(s): Late Spring, Early Summer, Mid Summer, Late Summer

Regional data and additional images for Ocimum basilicum

Lagerstroemia indica

Inflorescences and foliage

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