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Plant pH Reference List

Trees & Shrubs
NamepH Range
Abelia6.0 - 8.0
Acanthus6.0 - 7.0
Ailanthus6.0 - 7.5
Althea6.0 - 7.5
Arbutus4.0 - 6.0
Azalea4.5 - 6.0
Boxwood6.0 - 7.5
Broom5.0 - 6.0
Buddleia6.0 - 7.0
Butterfly Bush4.0 - 6.0
Catalpa6.0 - 8.0
Cedar5.5 - 7.5
Cistus6.0 - 7.5
Cottoneaster6.0 - 8.0
Crab Apple6.0 - 7.5
Deutzia6.0 - 7.5
Dogwood5.0 - 7.0
Elaeagnus5.0 - 7.5
Enkianthus5.0 - 6.0
Erica4.5 - 6.0
Euonymous6.0 - 8.0
Firethorn6.0 - 8.0
Forsythia6.0 - 8.0
Hawthorn6.0 - 7.0
Holly5.0 - 6.5
Honeysuckle6.0 - 7.5
Hydrangea - Blue4.0 - 5.0
Hydrangea - Pink6.0 - 7.0
Hydrangea - White6.5 - 8.0
Hypericum5.5 - 7.0
Juniper5.0 - 6.5
Kalmia4.5 - 5.0
Kerria6.0 - 7.0
Laurel6.5 - 7.5
Ligustrum5.0 - 7.5
Lilac6.0 - 7.5
Magnolia5.0 - 6.0
Mahonia6.0 - 7.0
Molinia4.0 - 5.0
Paulownia6.0 - 8.0
Privet5.0 - 7.5
Prunus6.5 - 7.5
Rhododendron4.5 - 6.0
Roses - Climbing6.0 - 7.0
Roses - Hybrid Tea5.5 - 7.0
Spiraea6.0 - 7.5
Spruce4.0 - 5.0
Sumack5.0 - 6.5
Tamarix6.5 - 8.0
Vibernum5.0 - 7.5
Virginia Creeper5.0 - 7.5
Weigelia6.0 - 7.5
Wisteria6.0 - 8.0

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