Potassium Sulfid (Liver Of Sulfur)

Simple solution, three ounces in ten gallons of water. For mildew in greenhouses, on rose bushes and other ornamentals.

Resin-Sal-Soda Sticker

Resin, two pounds; sal-soda (crystals), one pound; water, one gallon. Boil until of a clear brown color, i.e. from one to one and a half hours. Cook in an iron kettle in the open. Add this amount to fifty gallons of bordeaux. Useful for onions, cabbage, and other plants to which spray does not adhere well.

Sulfate Of Copper (Blue Vitriol)

Dissolve one pound of pure sulfate of copper in twenty-five gallons of water. A specific for peach leaf-curl. Apply once before buds swell in the spring. Cover every bud. For use in preparing bordeaux mixture. Costs from 5 to 7 cents a pound, in quantity.

Sulfate Of Iron (Copperas)

A greenish granular crystalline substance. Dissolve one hundred pounds in fifty gallons of water. For mustard in oats, wheat and the like, apply at the rate of fifty gallons an acre. Also for anthracnose of grapes as a dormant 3pray.

Sulfur (Ground Brimstone, Sulfur Flour, Flowers Of Sulfur)

Should be 99 per cent pure. Valuable for surface mildews. Dust on dry or in the greenhouse used in fumes. Evaporate it over a steady heat, as an oil-stove, until the house is filled with vapor. Do not heat to the burning point, as burning sulfur destroys most plants. To prevent burning, place the sulfur and pan in a larger pan of sand and set the whole upon the oil-stove.

Donald Reddick. Catalogue Of Diseases

Abies. Witches' Broom (Aecidium Elatinum. Melampsorella Ela-Tina)

On fir causing swellings, cankers, and witches' brooms. Control. Prune off all affected parts.

Abutilon. Rust

See under Hollyhock.

Contagious Chlorosis

Variegated leaves.


Remove variegated leaves and their shoots, keep in dark and remove any further variegated leaves; then the plant should remain green.

Acacia. Rusts (Aecidium Sp.)

Distorts branches and twigs.


Prune off diseased parts.

Catalogue of Diseases, continued.

Acer. Tar-Spot (Rhytisma Acerinum)

Black tar-like spots on upper side of the leaves.


Burn all old leaves in fall or winter.

Sun Scald Or Scorch

Maples suffer commonly from a drying up of the foliage, due to over-transpiration of water at times when hot winds occur.

Actinidia. Mildew (Uncinula Necator)

See under Ampelopsis.

Aesculus. Leaf-Spot (Phyllosticta Paviae)

Irregular spots develop rapidly, the larger part of the leaf being involved. Leaves fall prematurely.


Spray with bordeaux mixture, beginning when the leaves are about half-grown and repeating the process every three weeks.

Agave. Leaf-Blotch (Coniolhyrium Concentricum)

Grayish, more or less circular dead patches, ranging from 1/2 to 1 inch in diameter.


Remove and burn diseased leaves.


See under Onion.

Almond. Blight. (Coryneum Beyerinkii)

See Peach Blight.


See under Peach.

Alnus. Root-Tubercles

Clumps of small tubercles on the roots. Not important.

Witches' Brooms And Bladdery Deformations Of Flowers (Exoascus Sp.)

Broom-like tufts of branches and irregular deforming and contortion of fruits.


See under Peach Leaf-Curl.

Alyssum. Mildew (Erysiphe Polygoni)

See under Verbena. Disease very similar.


White "Rust" or Mildew (Albugo bliti) - See similar disease under Radish.


Rust (Gymnosporangium sp.) - Orange rust spots on leaves.


Keep junipers at a considerable distance.

Witches' Broom (Dimerosporium Collinsii)

Thick twisted broom-like growth of branches.


Cut out the brooms. Ampelopsis.


See under Grape.

Mildew (Uncinula Necator)

Powdery mildew growths on upper side of leaf.


Dust with sulfur.