Bloom Clock/Keys/Southeastern Pennsylvania/October/Yellow Flowers

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


Helenium autumnale

Flowering plant

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Profile for Helenium autumnale (Sneezeweed)
Identifying Characteristics
Habit: erect, freely branching forb
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Regional data and additional images for Helenium autumnale

Zinnia violacea

Head

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Profile for Zinnia violacea (Zinnia)
Identifying Characteristics
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Regional data and additional images for Zinnia violacea

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): Early Spring, Mid Spring, Mid Summer, Early Fall, Mid Fall, Late Fall, Early Winter

Regional data and additional images for Viola x wittrockiana

Linaria vulgaris

Inflorescences

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Profile for Linaria vulgaris (Butter and Eggs)
Identifying Characteristics
Habit: spreading herbaceous plant
Flowers: Snapdragon-like, yellow
Foliage: Simple, covered in a white, waxy bloom
Stem: Weak
Scent: None
Fruit: Dry capsules
Life Cycle: Perennial
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Global data:
Temperate zone season(s): Late Spring, Early Summer, Mid Summer, Late Summer, Mid Fall, Late Fall

Regional data and additional images for Linaria vulgaris

Solidago canadensis

Inflorescence and habit

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Profile for Solidago canadensis (Canada Goldenrod)
Identifying Characteristics
Habit: Erect, colonizing herbaceous plant
Flowers: Yellow heads held on compound panicles
Foliage: Simple
Life Cycle: Perennial
Similar Plants: Solidago gigantea (shoot axis without hairs)
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Regional data and additional images for Solidago canadensis

Oenothera

Flower of O. macrocarpa

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Profile for Oenothera (Evening Primrose)
Identifying Characteristics
Habit: Erect
Flowers: Yellow, 4 petals
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Global data:
Temperate zone season(s): Mid Summer, Late Summer, Early Fall, Mid Fall, Late Fall

Regional data and additional images for Oenothera

Oxalis stricta

Flowers and foliage

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Profile for Oxalis stricta (Common Yellow Woodsorrel)
Identifying Characteristics
Habit: Upright
Flowers: 5 petals, yellow
Foliage: Trifoliate, leaflets heart-shaped
Stem: Slender, green
Fruit: Explosive capsules
Life Cycle: Annual
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Global data:
Temperate zone season(s): Mid Spring, Late Spring, Early Summer, Mid Summer, Late Summer, Early Fall, Mid Fall, Late Fall

Regional data and additional images for Oxalis stricta

Rosa

Flowers

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Profile for Rosa (Rose)
Identifying Characteristics
Habit: Thorny shrubs
Foliage: alternate, pinnately compound
Stem: thorned
Fruit: small pomes (hips)
Life Cycle: perennial shrub
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Global data:
Temperate zone season(s): Late Spring, Early Summer, Mid Summer, Late Summer, Early Fall Mid Fall, Late Fall

Regional data and additional images for Rosa

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Chrysanthemum x morifolium

Flowering plants

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Profile for Chrysanthemum x morifolium (Hardy Chrysanthemum, Mum)
Identifying Characteristics
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Global data:
Temperate zone season(s): Mid Fall, Late Fall, Early Winter

Regional data and additional images for Chrysanthemum x morifolium

Oxalis corniculata

Plant with flowers, showing the purple foliage

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Profile for Oxalis corniculata (Creeping Woodsorrel)
Identifying Characteristics
Habit: Creeping, rooting at the nodes
Flowers: Yellow, 5-petaled
Foliage: Trifoliate with heart-shaped leaflets, usually purple
Fruit: Explosive capsules
[edit] Recent Logs

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 Oxalis corniculata

Lycopersicon

Inflorescence

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Profile for Lycopersicon (Tomato)
Identifying Characteristics
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Global data:
Temperate zone season(s): Early Summer, Mid Summer, Mid Fall, Late Fall

Regional data and additional images for Lycopersicon

Rudbeckia triloba

Flowers covering plant

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Profile for Rudbeckia triloba (Browneyed Susan)
Identifying Characteristics
Habit: upright forb, freely branching
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Tagetes patula

Heads

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Profile for Tagetes patula (French Marigold)
Identifying Characteristics
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Regional data and additional images for Tagetes patula

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Taraxacum officinale

Head

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Profile for Taraxacum officinale (Common Dandelion)
Identifying Characteristics
Habit: rosette-forming herbaceous plant with a long taproot
Flowers: Head, flowers are all ray-like
Foliage: Basal only, pinnately lobed
Stem: flower stems are hollow with a milky sap
Scent: mild, "sunny"
Growing Conditions: sunny and partly-shaded, well drained soils, drought intolerant
Fruit: achene with a silky pappus
Similar Plants: Hypochoeris radicata, Sonchus
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Global data:
Temperate zone season(s): Mid Winter, Late Winter, Early Spring, Mid Spring, Late Spring, Early Summer, Mid Summer, Late Summer, Early Fall, Mid Fall, Late Fall, Early Winter

Regional data and additional images for Taraxacum officinale

Rorippa sylvestris

Plant in bloom

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Profile for Rorippa sylvestris (Field Yellowcress)
Identifying Characteristics
Habit: Spreading herb
Flowers: Corymbs of yellow flowers, 4 yellow petals
Foliage: Pinnatifid, dark green
Stem: Purplish, flexible
Scent: mild, mustard-like
Similar Plants: Can be mistaken for Barbarea vulgaris or Barbarea verna
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Global data:
Temperate zone season(s): Late Spring, Early Summer, Mid Summer, Late Summer, Early Fall, Mid Fall, Late Fall

Regional data and additional images for Rorippa sylvestris

Solidago

Flowers on S. Gigantea

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Profile for Solidago (Goldenrod)
Identifying Characteristics
Subclass plants: Solidago canadensis, Solidago gigantea


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Global data:
Temperate zone season(s): Late Summer, Early Fall, Mid Fall, Late Fall, Early Winter

Regional data and additional images for Solidago

Lonicera japonica

Flowers and foliage

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Profile for Lonicera japonica (Japanese Honeysuckle)
Identifying Characteristics
Habit: Twining vine
Flowers: In terminal clusters, tubular, white or yellow (both colors often appearing on the same plant)
Foliage: Simple, opposite
Scent: Flowers are sweetly scented
Life Cycle: Woody perennial
[edit] Recent Logs

Global data:
Temperate zone season(s): Early Summer, Mid Summer, Late Summer, Early Fall, Mid Fall, Late Fall

Regional data and additional images for Lonicera japonica

Helianthus x laetiflorus

Head

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Profile for Helianthus x laetiflorus (Sunflower)
Identifying Characteristics
Habit: erect, clump-forming
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Global data:
Temperate zone season(s): Mid Summer, Late Summer, Early Fall, Mid Fall

Regional data and additional images for Helianthus x laetiflorus

Corydalis lutea

Flowers and foliage

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Profile for Corydalis lutea (Yellow Corydalis)
Identifying Characteristics
Habit: Mound-forming, colonizing herbaceous plant
Flowers: Tubular, spurred, yellow
Foliage: Pinnately compound, somewhat glaucus
Stem: Weak, sappy
Fruit: Explosive pods
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Global data:
Temperate zone season(s): Mid Spring, Late Spring, Early Summer, Mid Summer, Late Summer, Early Fall, Mid Fall, Late Fall, Early Winter

Regional data and additional images for Corydalis lutea

Artemisia annua

Closeup of flowers

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Profile for Artemisia annua (Sweet wormwood)
Identifying Characteristics
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(updated 14:11, 11 October 2007 (UTC) with 20 plants)

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