Ivydene Gardens Companion Planting:
Companion Plant : R

ORIGINAL PLANT

PEST/DISEASE

COMPANION PLANT

ANTAGONISTIC PLANT OR TO PEST/-DISEASE

Radish

Flea beetle (Faltica and Epitrix).

Grow with Lettuce to control the flea beetle.

Sage,
Mint.
Chervil,
Mustard,
Beet,
Spinach,
Carrot,
Parsnip,
Cucumber,
Squash,
Melon,
Tomato,
Kohlrabi,
Bush bean,
Pole bean.

Cress improves the flavour of the radish.

Nasturtium gives radishes a sharper flavour if grown nearby.

Pea,
Cabbage,
Cauliflower,
Onion.

Hyssop,
Cucumber beetle,
Grape,
Cucumber

Ranunculus

Snapdragon
Pansy
Daffodil

Raspberry (Rubus idaeus)

Japanese beetle.

Rue.
Tansy,
Marigold

Do not plant red and black raspberries together,

Blackberry.

Raspberry grown with Potato make the potato more susceptible to blight.

Redbud
(Cercis)

Dogwood

Rhododendron

Juglone from Black Walnut Tree leaves,

Yew
(Taxus)

Rhodohypoxis baurii

Artemisia schmidtiana 'Nana', Dwarf lavender

Rhubarb.

If the rhubarb starts flowering, then it is either short of water or food.

Dock encourages the presence of the yellow rhubarb beetle.

Romulea bulbocodium
and
Romulea ramiflora

Iris unguicularis, Grass

Roses.

When planting roses, put parsley and a clove of garlic to grow with it ( with a bamboo stick alongside to indicate that the leaf is garlic not grass!). The roots of the rose will take up the exudation from the garlic and so become less smell atractive to the greenfly.

Aphids.
 

Japanese beetle.

Black spot.

Nematode.
 

Rose beetle.

Rose chafer.

Allium family including Garlic against aphids.
 

Common Rue and White Geranium against Japanese Beetle.

Chives against Black Spot.

Marigold (Calendula officinalis) against Nematodes.

Hardy Geraniums, Petunias and Tree Onions provide protection against Rose chafer.
 

Grow Mignonette as a low ground cover in rose-beds to benefit the rose-bushes.

Parsley,
Onion,
Tomato,
Lupine,
Tansy,
Leek,

Banana-skins have calcium, sodium, silica, sulphur, magnesium and phosphates so provide plant-food when covered with top-soil around each plant.

Narcissi,
Salvia officinalis,
Ajuga reptans,
Hemerocallis,
Lilium candidum,
Dictamnus albus,
Spinach,
Nasturtium,
Mallow,
Fritillaria.

Santolina grown as 2 feet high groundcover in the rose-bed provides a silver-grey backdrop.

Boxwood

Rosemary (Rosmarinus officinalis) repels mosquitos.

Sage,
Bean,
Cabbage,
Carrot,
Bee

Cucumber,
Carrot fly,
Potato
Cabbage worm butterfly

Rubber tree (Hevea)

Citrus trees

Rue
(Ruta graveolens).
Grow in Window-box to keep out flies

Fig,
Rose,
Raspberry,
Bees love it.

Cats and Slugs avoid it.

House and Stable fly,
Cabbage.

Sage and Basil are both poisoned by Rue.

Rutabaga (Brassica napobrassica)

Aphid

Hairy vetch.
Mustard,
Pea,
Radish

Knotweed
(Polygonum aviculare),
Cabbage family,
Hedge mustard

Rye
(Secale cereale)

Pansy

Chokes Weeds,

Field poppy and
Couch Grass.