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OPALS - Ogren Plant Allergy Scale

Plants with a very low potential to cause allergic reactions (1 to 3 rating)

A photo of Balkan Clary 'Caradonna'

Balkan Clary 'Caradonna'

Salvia nemorosa 'Caradonna'

A photo of Banksia Rose

Banksia Rose

Rosa banksiae

A photo of Bearded Iris

Bearded Iris

Iris × germanica

A photo of Bugle 'Catlin's Giant'

Bugle 'Catlin's Giant'

Ajuga reptans 'Catlin's Giant'

A photo of Catmint 'Six Hills Giant'

Catmint 'Six Hills Giant'

Nepeta 'Six Hills Giant'

A photo of Choisya 'Aztec Pearl'

Choisya 'Aztec Pearl'

Choisya × dewitteana 'Aztec Pearl'

A photo of Cranesbill 'Orion'

Cranesbill 'Orion'

Geranium 'Orion'

A photo of Dusky Cranesbill 'Lily Lovell'

Dusky Cranesbill 'Lily Lovell'

Geranium phaeum 'Lily Lovell'

A photo of Echeveria


Echeveria spp.

A photo of False Indigo

False Indigo

Baptisia australis

A photo of Feather Reed Grass 'Overdam'

Feather Reed Grass 'Overdam'

Calamagrostis × acutiflora 'Overdam'

A photo of Fir


Abies spp.

A photo of Golden Oats

Golden Oats

Stipa gigantea

A photo of Helen's Flower

Helen's Flower

Helenium 'Sahin's Early Flowerer'

A photo of Hosta


Hosta spp.

A photo of Japanese Snowball 'Mariesii'

Japanese Snowball 'Mariesii'

Viburnum plicatum f. tomentosum 'Mariesii'

A photo of Jerusalem Sage

Jerusalem Sage

Phlomis italica

A photo of Lamb's Ear 'Silver Carpet'

Lamb's Ear 'Silver Carpet'

Stachys byzantina 'Silver Carpet'

A photo of Great Masterwort

Great Masterwort

Astrantia major

A photo of Nemesia


Nemesia spp.

A photo of Okra


Abelmoschus esculentus

A photo of Peace Lily

Peace Lily

Spathiphyllum spp.

A photo of Pearlbush 'The Bride'

Pearlbush 'The Bride'

Exochorda × macrantha 'The Bride'

A photo of Penstemon 'Andenken An Friedrich Hahn'

Penstemon 'Andenken An Friedrich Hahn'

Penstemon 'Andenken an Friedrich Hahn'

A photo of Pineapple Flower

Pineapple Flower

Eucomis spp.

A photo of Barrenwort


Epimedium × rubrum

A photo of Red Guelder Rose

Red Guelder Rose

Viburnum opulus 'Roseum'

A photo of Rose


Rosa 'Cecile Brunner'

A photo of Rose 'Iceberg'

Rose 'Iceberg'

Rosa 'Iceberg'

A photo of Rudbeckia 'Goldsturm'

Rudbeckia 'Goldsturm'

Rudbeckia fulgida var. sullivantii 'Goldsturm'

A photo of Sacred Bamboo

Sacred Bamboo

Nandina domestica

A photo of Siberian Bugloss 'Jack Frost'

Siberian Bugloss 'Jack Frost'

Brunnera macrophylla 'Jack Frost'

A photo of Snowy Mespilus

Snowy Mespilus

Amelanchier × lamarckii

A photo of Soft Caress Mahonia

Soft Caress Mahonia

Berberis ganpinensis 'Soft Caress'

A photo of Spiny Bear's Breeches

Spiny Bear's Breeches

Acanthus spinosus

A photo of Tulip Tree

Tulip Tree

Liriodendron tulipifera

A photo of Wallflower 'Bowles's Mauve'

Wallflower 'Bowles's Mauve'

Erysimum 'Bowles's Mauve'

A photo of Willow-Leaved Sunflower

Willow-Leaved Sunflower

Helianthus salicifolius

A photo of Winter-Flowering Cherry 'Autumnalis'

Winter-Flowering Cherry 'Autumnalis'

Prunus x subhirtella 'Autumnalis'