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

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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Zinnia violacea

Head

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Profile for Zinnia violacea (Zinnia)
Identifying Characteristics
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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
Higher taxa:Viola


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


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


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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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


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


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
Subclass plants:Rosa canina

Rosa multiflora
Rosa palustris
Rosa rugosa

Rosa 'Peace'

Rosa 'Pink Knockout'
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Global data:
Temperate zone season(s): Late Spring, Early Summer, Mid Summer, Late Summer, Early Fall Mid Fall, Late Fall


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


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


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


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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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
Recent Logs
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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


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


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


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


Helianthus x laetiflorus

Head

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


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
Recent Logs
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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


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)