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The species are very closely allied, and difficult to distinguish. The following are the only kinds well known, and they are all from Mexico. If in good condition they bloom every year in warm countries from suckers of the previous year, but in the North they are likely to bloom only at long irregular intervals. The species succeed best when treated similarly to agaves, with the exception of the soil, which may be made richer by the addition of crushed bone and a little vegetable-mold. All of the species need greenhouse protection in the northern states. They are hardy in the warmest parts of the British Islands. Useful for bedding as striking foliage subjects.

The species are very closely allied, and difficult to distinguish. The following are the only kinds well known, and they are all from Mexico. If in good condition they bloom every year in warm countries from suckers of the previous year, but in the North they are likely to bloom only at long irregular intervals. The species succeed best when treated similarly to agaves, with the exception of the soil, which may be made richer by the addition of crushed bone and a little vegetable-mold. All of the species need greenhouse protection in the northern states. They are hardy in the warmest parts of the British Islands. Useful for bedding as striking foliage subjects.

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