Plant

pH Value

Achillea (yarrow)

6 - 7.5

Almond

6 - 7.5

Ajuga (bugle weed)

6 - 7.5

Anemone

6 - 7.5

Annuals (bedding garden)

6 – 7.5

Aralia

5.5 - 7.5

Arborvitae

6.5 - 8

Artemisia

6 - 7

Astilbe

5.5 - 7

Top

Azalea

4.5 – 5.5

Balsam Fir

4.5 - 5.5

Bayberry

5 - 6

Beautybush

5.5 - 7

Beech

5 - 7.5

Begonia

6 – 7

Birch

5 - 6.5

Black-Eyed-Susan

6 - 7.5

Bleeding Heart

5.5 - 7.5

Boxwood

6.8 – 7.5

Top

Buddleia (butterfly bush)

6 – 7

Calla Lily

6 – 7

Camellia

4.5 – 5.5

Campanula

6 - 7.5

Candytuft (iberis)

6 - 7.5

Canna

6 - 7.5

Catmint

6 - 7

Cherry

6 - 7.5

Chokeberry

6 - 6.5

Chrysanthemum

6 – 6.5

Top

Clematis

6.5 – 7

Clethra (summersweet)

5 - 7.5

Columbine

6 - 7.5

Coneflower

6 - 7.5

Coreopsis

6 - 7.5

Corktree

5.5 - 7.5

Cotoneaster

6 – 7

Crabapple

6.5 – 7

Cranesbill

6 - 7.5

Cypress

6 - 7

Top

Daylily

6 - 7.5

Deutzia

6 - 7.5

Dianthus

6 - 7.5

Dicentra

5.5 - 7.5

Dogwood

5 - 7.5

Elm

6 - 7.5

Euonymus

5.5 - 7.5

Evening Primrose

6 - 7.5

Fir

4 – 5.5

Forsythia

6.5 – 7

Top

Fothergilla

4.5 - 6.5

Fringe Tree

5 - 6

Ginkgo (maidenhair)

5.5 - 7.5

Grapes

5.7 – 6

Hackberry

6 - 7.5

Hawthorn

6 - 7.5

Heath

4.5 - 6

Hemlock

4.5 - 6

Heuchera (coral bells)

6 - 7.5

Holly (ilex)

4.5 - 5.5

Top

Hollyhock

6 – 7

Honeylocust

6 - 8

Honeysuckle

6 - 7.5

Hosta

6 – 7

Hydrangea

4.5 - 7.5

Hypericum

6.5

Ivy

6 – 7.5

Juniper

4.5 – 5.5

Kentucky Coffee Tree

6 - 8

Kerria

5.5 - 7

Top

Laurel

4 – 5.5

Lavender

6.5 – 7.5

Leucothoe

4.5 - 6

Liatris

6 - 7.5

Ligustrum (privet)

5.5 - 8

Lilac

6.5 – 7

London Planetree

6 - 7.5

Lupine

4 - 6

Linden

6 - 7.5

Magnolia

5.5 - 7

Top

Mahonia

6 - 7.5

Marigold

5.5 – 7

Mockorange

6 - 7

Monarda (bee balm)

6 - 7

Mountain Ash

6 - 7.5

Mountain Laurel

4.5 - 6.5

Myrtle

6 - 7.5

Nasturtium

5.5 – 7.5

Oak

4.5 - 6

Oriental Lily

6 - 7.5

Top

Ornamental Grass

7

Pachysandra

5 – 8

Pansy

5.5 – 7

Pear

6 - 7.5

Peony

6 – 8

Petunia

6 – 7.5

PierisJaponica (Andromeda)

4 – 5.5

Pine

4 – 5.5

Plum

6 - 7.5

Potentilla

6 - 7.5

Top

Privet (ligustrum)

5.5 – 8

Pyracantha (firethorn)

5 – 6

Quince

6 - 7.5

Redbud

6.5 – 7

Rhododendron

4 – 5.5

Rose

6 – 7

Rose-of-Sharon (Althea)

6 – 7

Russian Olive

6 - 7.5

Smoketree

5.5 - 7.5

Spirea

6 – 7

Top

Spruce

4 – 5.5

Strawberry

5.5 – 6

Sweet Gum

5.5 - 7

Sweet Woodruff

6.5 – 8

Taxus (yew)

6.5 – 7.5

Tulip

6 – 7

Viburnum

6 – 7

Weigela

6 - 7.5

Witch Hazel

5.5 - 7.5

Willow

5.5 - 7.5

Top

Wisteria

6 - 7.5

Yucca

5.5 - 7

Zinnia

5.5 - 7