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There are two very distinct groups of eryngoes, one with much-cut foliage, as shown in Fig. 1417, the other the "pandanus group" (of the New World), with long undivided leaves. The species are little grown in this country, but they are more used abroad. They produce striking semi-formal and often somewhat bizarre effects. They are used in subtropical bedding, particularly the large pandanus-leaved kinds. They are excellent for borders and rock-gardens, being prized particularly for their colored stems and often brilliant involucre. The stiff leaves of the pandanus group are little damaged by weather. The dried stems retain their color, and are sometimes hung in living-rooms. The plants mostly grow from 2 to 3 feet high and head out in July to September. A light rich soil and sunny situation are advised. Poor drainage is to be avoided. E. amethystinum is probably the most popular species in this country. E. planum is said to be much visited by bees. They are slow to recover from the shock of division. This makes it difficult to work up a stock at home sufficient to make an effective group. The only safe way to increase them is by seed. The seed may be sown as soon as gathered. They will germinate in the spring, and should be ready to plant out the following year. Some of the species self-sow. The species described below are perennial.

There are two very distinct groups of eryngoes, one with much-cut foliage, as shown in Fig. 1417, the other the "pandanus group" (of the New World), with long undivided leaves. The species are little grown in this country, but they are more used abroad. They produce striking semi-formal and often somewhat bizarre effects. They are used in subtropical bedding, particularly the large pandanus-leaved kinds. They are excellent for borders and rock-gardens, being prized particularly for their colored stems and often brilliant involucre. The stiff leaves of the pandanus group are little damaged by weather. The dried stems retain their color, and are sometimes hung in living-rooms. The plants mostly grow from 2 to 3 feet high and head out in July to September. A light rich soil and sunny situation are advised. Poor drainage is to be avoided. E. amethystinum is probably the most popular species in this country. E. planum is said to be much visited by bees. They are slow to recover from the shock of division. This makes it difficult to work up a stock at home sufficient to make an effective group. The only safe way to increase them is by seed. The seed may be sown as soon as gathered. They will germinate in the spring, and should be ready to plant out the following year. Some of the species self-sow. The species described below are perennial.

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==Species==

==Species==

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Any number of eryngiums may be expected to appear in the list, as they are likely to strike the attention of collectors. They appear to hybridize rather freely. E. hybridum is a trade name for garden forma, but it has no botanical standing.—E. Rothenbergii la a garden hybrid of E. alpinum and E. giganteum.—E. azureum and E. coelestinum are garden names without botanical standing; the latter is said to be E. amethystinum.—E. Eberieum=E. eburneum (?).—E. Wrightii is said to be a free form of E. planum, blooming for a long period.

==Gallery==

==Gallery==