Seasonal Flowering Plant Chart - 2019

      SEASONAL FLOWERING PLANT CHART

                                                                                                                   From: Peter Prakke

The seasonal flowering plant chart will assist you, to design your continuous flowering garden and container plants, depending the environmental conditions in your area. 

Emphasis has been placed, to protect all the “respiratory” sufferers.  

 

FLOWERING SEASON

ALLERGY RATING

COMMON NAME

BOTANICAL NAME

SPRING

SUMMER

FALL

Common yarrow

Achillea milefolium

x

x

        4

Flossflower

Ageratum houstonianum

x

x

2

Hollyhock

Alcea rosea

x

x

x

3

Love-lies-bleeding

Amaranthus caudatus

x

x

 6

Snapdragon

Antirrhinum majus

x

x

x

2

Columbine

Aquilegia 

x

1

Butterfly weed

Asclepias tuberose

x

x

3

Astilbe

Astilbe spp

x

x

4

Wax begonia

Begonia semperflorens

x

x

4

Marigold

Calendula spp

x

x

x

4

Vinca

Catharanthus roseus

x

x

1

Shasta daisy

Chrysanthemum x leucant

x

x

 6   

Rock rose

Cistus spp

x

x

4

Clematis

Clematis spp

x

x

x

1

Larkspur

Consolida ambigua

x

x

x

3

Morning glory

Convolvulus tricolour

x

x

x

2

Sweet William

Dianthus barbatus

x

x

x

3

Dianthus (Pink’s)

Dianthus deltoids

x

x

x

3

Bleeding heart

Dicentra exima

x

x

x

4

Foxglove

Digitalis purpurea

x

x

2

Fleabane

Erigeron spp

x

x

4

California poppy

Eschscholzia californica

x

3

Blanket flower

Gailardia x grandiflora

x

x

        6

Gaura

Gaura lindheimeri

x

x

2

Gazania

Gazania rigens

x

x

4

Globe amaranth

Gomphrena globosa

x

x

4

Strawflower

Helichrysum bracteatum

x

x

4

Hellebores

Helleborus spp

x

4

Daylily

Hemerocalis spp

x

x

6

Day lily

Hemerocallis hybrids

x

x

6

Coral bells

Heuchera spp

x

x

1

Impatiens

Impatiens spp

x

x

1

Candytuft

Iris sibirica

x

x

4

Spotted dead nettle

Laminum maculatum

x

x

1

Lantana

Lantana camara

x

x

 6   

Lavender

Lavendula angustifolia

x

5

Lily

Lilium hybrids

x

4

Flax – perennial

Linum perenne

x

x

4

Sweet alyssum

Lobularia maritime

x

x

5

Honeysuckle

Lonicera aempervirens

x

x

 6

Money plant

Lunaria annua

x

x

4

Mandevilla

Mandevilla x amabilis

x

x

4

Bee balm

Monarda didyma

x

x

3

Forget-me-not 

Myosotis

x

2

Daffodil

Narcissus hybrids

x

4

Catnip

Nepeta spp

x

x

x

2

Flowering tobacco

Nicotiana spp

x

x

3

Love-in-a mist

Nigella damascene

x

x

3

Evening primrose

Oenothera spp

x

x

3

Sweet marjoram

Origanum majorana

x

3

Peony

Paeonia hybrids

x

x

3

Oriental poppy

Papaver orientale

x

x

3

Poppy

Papaver spp

x

3

Geranium

Pelargonium x hortorum

x

x

3

Petunia

Petunia hybrids

x

x

x

2

Scarlet runner bean

Phaseolus coccineus

x

x

4

Moss rose

Portulaca grandiflora

x

x

2

Salvia

Salvia spp

x

x

4

Salvia

Salvia x sylvestres

x

x

x

4

Zinnia

Santivitalia procumbens

x

x

4

Soapwort

Saponaria spp

x

x

3

Pincushion flower

Scabiosa columbaria

x

x

x

3

Bridal wreath sp.

Spiraea spp

x

x

 5

Marigold

Tagetes hybrids

x

x

 6

Meadow rue

Thalictrum aquilegiifolium 

x

x

x

 9

Black-eyed-Susan

Thunbergia alata

x

x

2

Spiderwort

Tradescantia spp

x

x

4

Nasturtium

Tropaeoleum majus

x

x

3

Tulip

Tulipa hybrids

x

3

Mullein

Verbascum spp

x

x

Verbena

Verbena spp

x

x

3

Pansy

Viola spp

x

x

x

1

 

This allergy rating is according the OPALS® (Ogren Plant Allergy Scale) rating.

1 = low (allergy friendly) – 10 = high allergy rating. (Avoid) 

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