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The Pearl variety of <i>Achillea ptarmica</i> is a full double variety. It is one of the most popular of all hardy herbaceous plants.

Achillea Ptarmica Variation the Pearl

The Pearl variety of Achillea ptarmica is a full double variety. It is one of the most popular of all…

Pictured is a good pot plant of aloe showing the offsets. Aloe plants have a stiff, harsh, and rugged habit.

Pot Plant of Aloe

Pictured is a good pot plant of aloe showing the offsets. Aloe plants have a stiff, harsh, and rugged…

Pictured are annuals filling the formal space between a drive and a tree group. Annuals are plants that bloom in the open the same year the seeds are sown and that do not live over winter.

Annual Plants in Landscaping

Pictured are annuals filling the formal space between a drive and a tree group. Annuals are plants that…

Pictured is a semi-formal garden space of annual flowers. Annuals are plants that bloom in the open the same year the seeds are sown and that do not live over winter.

Semi-Formal Garden Space

Pictured is a semi-formal garden space of annual flowers. Annuals are plants that bloom in the open…

An aquarium is a glass tank for live fish, plants, and the like. Pictured is a rectangular glass aquarium.

Rectangular Glass Aquarium

An aquarium is a glass tank for live fish, plants, and the like. Pictured is a rectangular glass aquarium.

Pictured is a lawn pond of aquatics with a mason-work margin. Aquatics are plants suited to cultivation only in water.

Lawn Pond of Aquatics

Pictured is a lawn pond of aquatics with a mason-work margin. Aquatics are plants suited to cultivation…

Pictured is an informal lawn pond. Aquatic plants grow in lawn ponds.

Lawn Pond

Pictured is an informal lawn pond. Aquatic plants grow in lawn ponds.

Pictured is a hardy chrysanthemum. It is one the best of the autumn blooming herbaceous plants.

Hardy Chrysanthemum

Pictured is a hardy chrysanthemum. It is one the best of the autumn blooming herbaceous plants.

Basket plants are plants which, from their habit of growth and blooming, have been found especially suitable for use in hanging baskets.

Hanging Basket

Basket plants are plants which, from their habit of growth and blooming, have been found especially…

The numbers represent different plants in this oriental pattern bedding. (1) white geranium, (2) <I>Calendula officinalis</I>, (3) green coleus, (4) lemoine's heliotrope, (5) <I>Alyssum variegatum</I>, (6) outline of black-red coleus.

Oriental Pattern Bedding

The numbers represent different plants in this oriental pattern bedding. (1) white geranium, (2) Calendula…

The number represent different plants in this French pattern bedding. (1) sulphur queen, (2) blue perfection, (3) white geranium, (4) scarlet geranium, and (5) pink geranium. A palm is at the center.

French Pattern Bedding

The number represent different plants in this French pattern bedding. (1) sulphur queen, (2) blue perfection,…

The numbers represent different plants in the French border pattern bedding. (1) marquerite, (2) coleus, (3) scarlet geranium, (4) <I>Cineraria maritima</I>, (5) <I>Calendula officinalis</I>, (6) blue perfection, and (7) white geranium.

French Border Pattern Bedding

The numbers represent different plants in the French border pattern bedding. (1) marquerite, (2) coleus,…

The numbers represent the different plants in the Tudor rose pattern bedding. (1) scarlet begonia, (2) <I>Lobelia erinus</I>, white, (3) <I>Echeveria secunda glauca</I>, (4) scarlet geranium, (5) <I>Cineraria maritima</I>, and (6) <I>Alternanthera paronychioides</I>.

Tudor Rose Pattern Bedding

The numbers represent the different plants in the Tudor rose pattern bedding. (1) scarlet begonia, (2)…

Pictured is an English border pattern from the eighteenth century. The numbers represent different plants. (1) <I>Lobelia erinus</I>, blue, (2) begonia, (3) <I>Cineraria maritima</I>, (4) <I>Calendula officinalis</I>, (5) <I>Lobelia erinus</I>, white, and (6) <I>Alternanthera paronychioides</I>.

English Border Pattern Bedding

Pictured is an English border pattern from the eighteenth century. The numbers represent different plants.…

Pictured is an Italian pattern of bedding, the numbers representing different plants. (1) orange king, (2) blue perfection, (3) white geranium, (4) scarlet geranium, and (5) <I>Alternanthera paronychioides</I>.

Italian Pattern Bedding

Pictured is an Italian pattern of bedding, the numbers representing different plants. (1) orange king,…

Pictured are young plants starting from incisions on a begonia leaf.

Begonia Leaf

Pictured are young plants starting from incisions on a begonia leaf.

Illustrated is a view in a botanic garden, showing related plants in groups.

View of Botanic Garden

Illustrated is a view in a botanic garden, showing related plants in groups.

Illustrated are tips of rhipsalis cassytha. Rhipsalis plants have habits similar to mistletoe. It grows on the trunks and branches of trees. It is part of the cactus family.

Rhipsalis Cassytha

Illustrated are tips of rhipsalis cassytha. Rhipsalis plants have habits similar to mistletoe. It grows…

Old time canna plants were tall and long jointed. The flowers were small and late.

Old Time Canna

Old time canna plants were tall and long jointed. The flowers were small and late.

Illustrated is a small plant of florists' cineraria. The plants run in white and in shades of blue, pink, and purple-red.

Florists' Cineraria

Illustrated is a small plant of florists' cineraria. The plants run in white and in shades of blue,…

Cypripedium californicum plants are either slender or stout. The flowers are small with six to twelve open at the same time.

Cypripedium Californicum

Cypripedium californicum plants are either slender or stout. The flowers are small with six to twelve…

Fuller's teasel is the common name of dipascus fullonum. The plants are prickly or rough-hairy. The flowers are small and grow in dense heads. The flowers are blue or lilac.

Fuller's Teasel

Fuller's teasel is the common name of dipascus fullonum. The plants are prickly or rough-hairy. The…

Illustrated are diagrams to explain the effect of lowering the water table by means of under draining. In undrained soil the root don't penetrate deeply. This harms the plants if a drought comes.

Water Table Diagram

Illustrated are diagrams to explain the effect of lowering the water table by means of under draining.…

Dwarf plants are those that never reach the height or size of the usual individuals of the species. The art of dwarfing trees has been practiced by Japanese gardeners for many years.

Japanese Dwarf Tree

Dwarf plants are those that never reach the height or size of the usual individuals of the species.…

Scarlet plume is the common name of euphorbia fulgens. The plant is native to Mexico. It is a small shrub with drooping branches.

Scarlet Plume

Scarlet plume is the common name of euphorbia fulgens. The plant is native to Mexico. It is a small…

Illustrated is a euphorbia neriifolia hedge in the west Indies. The plant blooms in June and July.

Euphorbia Neriifolia

Illustrated is a euphorbia neriifolia hedge in the west Indies. The plant blooms in June and July.

Melon spurge is the common name of euphorbia meloformis. It is native to South Africa. It is often mistaken for a cactus.

Melon Spurge

Melon spurge is the common name of euphorbia meloformis. It is native to South Africa. It is often mistaken…

Euptelea polyandra is native to Japan. The leaves are usually a roundish, egglike shape. The margins of the leaves are coarsely toothed.

Euptelea Polyandra

Euptelea polyandra is native to Japan. The leaves are usually a roundish, egglike shape. The margins…

Crape myrtle is the common name of lagerstroemia indica. It is cultivated in India but probably native to China. The flowers are usually bright pink.

Crape Myrtle

Crape myrtle is the common name of lagerstroemia indica. It is cultivated in India but probably native…

Lespedeza sieboldii is native to Japan. The flowers bloom in September. The flowers are large and rose purple.

Lespedeza Sieboldii

Lespedeza sieboldii is native to Japan. The flowers bloom in September. The flowers are large and rose…

Illustrated is a cross section of a greenhouse used for growing lettuce and cucumbers. The slanting side toward the right (north) is boarded and used for forcing rhubarb. The cucumber plants are trained vertically.

Greenhouse for Lettuce and Cucumber

Illustrated is a cross section of a greenhouse used for growing lettuce and cucumbers. The slanting…

Illustrated is a privet hedge at final transplanting. The plants may be set twelve to fifteen inches apart.

Privet Hedge

Illustrated is a privet hedge at final transplanting. The plants may be set twelve to fifteen inches…

Alfalfa and lucerne are the common names of <i>medicago sativa</i>. The plant is native to Europe. It is cultivated as hay and pasture plants.

Alfalfa

Alfalfa and lucerne are the common names of medicago sativa. The plant is native to Europe. It is cultivated…

A mint still is used to extract the oils from mint plants.

Mint Still

A mint still is used to extract the oils from mint plants.

<i>Miscanthus sinensis</i> is a tall, perennial grass. Established plants form clumps as much as eighteen feet in circumference.

Miscanthus Sinensis

Miscanthus sinensis is a tall, perennial grass. Established plants form clumps as much as eighteen feet…

Pictured are bundles from the Herbarium of Willdenow. The plants are preserved in stout blue paper wrappers.

Herbarium of Willdenow

Pictured are bundles from the Herbarium of Willdenow. The plants are preserved in stout blue paper wrappers.

Pictured are five distinct types of nepenthes, or pitcher plants. From top to bottom: <i>N. villosa, N. Lowii, N. Rajah, N. Hookeriana</i>, and <i>N. Rafflesiana.</i>

Five Types of Nepenthes

Pictured are five distinct types of nepenthes, or pitcher plants. From top to bottom: N. villosa, N.…

Pictured are three old time nepenthes, or pitcher plants. From top to bottom: <i>N. phyllamphora, N. khasiana</i>, and <i>N. distillatoria</i>.

Old Time Nepenthes

Pictured are three old time nepenthes, or pitcher plants. From top to bottom: N. phyllamphora, N. khasiana,…

Illustrated is an example of how pitcher plants change their shape. The earliest, and best, are mug shaped. The topmost pitchers of old and tall plants are cylindrical.

Pitcher Plant

Illustrated is an example of how pitcher plants change their shape. The earliest, and best, are mug…

Pictured is a view of an American apple tree nursery. In horticulture a nursery is an establishment for the rearing of plants.

Apple Tree Nursery

Pictured is a view of an American apple tree nursery. In horticulture a nursery is an establishment…

<i>Oncidium tigrinum</i> blooms in winter and is native to Mexico. The flowers are a rich, reddish brown with spots of yellow.

Oncidium Tigrinum

Oncidium tigrinum blooms in winter and is native to Mexico. The flowers are a rich, reddish brown with…

Inarching, also known as approach grafting, is used to join two plants that are otherwise very difficult to join together. The pieces are tied so that each individual piece has roots beneath it and growth above it. Inarching can also be used in pleaching, which is the technique of weaving tree branches into bushes for decorative purposes.

Approach Grafting

Inarching, also known as approach grafting, is used to join two plants that are otherwise very difficult…

Various cabbage plants drawn on the same scale. Upper left: Brussels sprouts, lower left: cabbage, upper right: Swede turnip, middle right: Kohlrabi, bottom right: cauliflower

Cabbage Plant

Various cabbage plants drawn on the same scale. Upper left: Brussels sprouts, lower left: cabbage, upper…

A leafy branch, with separate roots illustrated on the right.

Leafy Branch with Roots

A leafy branch, with separate roots illustrated on the right.

Any plant belonging to the genus Ficus is a fig. They are widely distributed in warm climates. Some bear edible fruit. This illustration shows a fig plant, as well as the male and female flowers, and a cross-section of the fruit of a fig.

Fig

Any plant belonging to the genus Ficus is a fig. They are widely distributed in warm climates. Some…

Fritillary is a genus of liliaceous plants, characterized by bearing solitary flowers, each with six petals, and a nectary to each petal. This image shows the variety F. meleagris.

Fritillary (F. meleagris)

Fritillary is a genus of liliaceous plants, characterized by bearing solitary flowers, each with six…

A state of flower or fruit in which the carpels are united.

Syncarpous

A state of flower or fruit in which the carpels are united.

A type of fruit.

Achene

A type of fruit.

This is a classification of a type of fruit.

Glans

This is a classification of a type of fruit.

This is a classification of a type of fruit.

Cysela (Inferior Achene)

This is a classification of a type of fruit.

This is a classification of a type of fruit.

Cysela, stalked

This is a classification of a type of fruit.

This is a classification of a type of fruit.

Key Fruit of Ash

This is a classification of a type of fruit.

This is a classification of a type of fruit.

Elm

This is a classification of a type of fruit.

This is a classification of a type of fruit.

Caryopsis

This is a classification of a type of fruit.

This is a classification of a type of fruit.

Schizocarp (Carcerule) of Mallow

This is a classification of a type of fruit.

This is a classification of a type of fruit.

Samara

This is a classification of a type of fruit.

This is a classification of a type of fruit.

Follicle (fruit)

This is a classification of a type of fruit.

This is a classification of a type of fruit.

Legume

This is a classification of a type of fruit.

This is a classification of a type of fruit.

Siliqua

This is a classification of a type of fruit.

This is a classification of a type of fruit.

Silicule

This is a classification of a type of fruit.