The genus Agave is treated here in a wide sense to include taxa previously treated as belonging to the genera Manfreda, Prochnyanthes, Polianthes and Pseudobravoa. Not all botanists are happy with this treatment, with some feeling that these genera should remain distinct, at least until further studies have been carried out. In addition, given the high species diversity found in Agave, some feel that an alternative approach could be the recognition of several smaller genera within the current circumscription of Agave[].

Common Name:

General Information

Agave palmeri is an evergreen, stemless, succulent plant forming a rather open rosette of leaves that can be 50 - 120cm tall and 100 - 120cm in diameter. The leaves on mature plants can each be 35 - 75cm long and 7 - 10cm wide near the base. After several years of growth, a flowering stem that can be around 3 - 6.5 metres tall is produced, after which the rosette will die. However, the plant occasionally produces a number of young plants around its base that will develop as new plants[, ].
The plant is harvested from the wild for local use as a food and to make the distilled drink 'mezcal', and also as a source of fibre.
Agave palmeri is widely distributed, it is often abundant where found and although it faces multiple threats, declines are localised within the larger range. The plant is classified as 'Least Concern' in the IUCN Red List of Threatened Species(2019)[].

Known Hazards

Many Agave species have strong, sharp spines on the leaves and leaf tips.
In theory at least, the flowers, nectar, immature flowering stem and the centre of the rosette of all Agave species is edible and, with proper preparation, can provide a sweet, tasty foodstuff. Some species, however, contain relatively high levels of saponins (which makes them taste bitter) and some other compounds which can cause bellyache, and so these would only be eaten in times of desperation. In addition, many people may find these foods to be strongly laxative the first few times they eat them[].

Botanical References

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Range

Southwestern N. America - SE. Arizona to SW. New Mexico to northern Mexico (Sonora, NW. Chihuahua).

Habitat

Sandy to rocky or gravelly slopes and in grassland, oak savannah, and pine dominated communities, also along disturbed habitats near highways; at elevations from 900 - 2,200 metres[].

Properties

Conservation Status	Least Concern
Edibility Rating
Other Uses Rating
Habit	Evergreen Perennial
Height	1.00 m
Pollinators	Bats, Insects, Hummingbirds
Cultivation Status	Wild

Cultivation Details

Agave species are found mainly in the arid and semi-arid regions of southwestern N. America, especially in Mexico. Many species can withstand at least a few degrees of frost and will succeed outdoors in warm temperate climates, but only in drier regions and where soils are very well-drained.
Agave species generally require a sunny position, succeeding in most soils of medium-fertility so long as they are very well-drained. Most species are undemanding as to the soil pH, though those found in the wild on limestone soils will grow better in neutral to alkaline conditions. Plants are generally very tolerant of dry conditions and of drought[].
Most Agave species are monocarpic, individual rosettes living for a number of years without flowering before sending up an often very large flowering stem and then dying after flowering and setting seed. This species, however, occasionally produces a number of new rosettes from suckers towards the end of its lifespan its lifespan and these new plants will continue to grow after the death of the parent plant[].
Individual plants take about 7 - 15 years in their native habitat, considerably longer in colder climates, before flowering[].
This species is an important source of nectar for the threatened Lesser Long-nosed Bat (Leptonycteris yerbabuenae)[].
Members of this genus are rarely if ever troubled by browsing deer[].

Edible Uses

The plant is used to produce mezcal spirit and bacanora[, ]]. Mezcal is a distilled alcoholic beverage that potentially can be made from almost any species of Agave, though only around fifty are used regularly and seven species are especially favoured. Mature plants are harvested from the wild, their leaves and roots are removed and the remaining 'hearts' are baked (often in an earth oven), then mashed and the resulting liquid allowed to ferment for a few days before being distilled to produce mezcal.

The plant is collected both for eating and for making mescal[].
Various parts of the plant were traditionally eaten. Tthe heart of the rosette, after the roots and leaves have been removed, can be slow-baked for several hours This will convert much of the carbohydrates into sugars and the heart can then be eaten, converted into a distilled liquor (mezcal), dried for later use etc. The best species have a very sweet, syrup-like flavour[].
The slow-baked leaf bases are also edible, but very fibrous. They are chewed for their sweet flavour, and the fibrous remains spat out[].
In addition, the young flowering stem can also be cooked and eaten - it has a sweet flavour, though it can be rather fibrous. The flower buds and the flowers can also be cooked and eaten.
Many Agave species produce copious nectar when flowering, and this was sometimes collected and drunk. Although sweet, it can be rather nauseus, but improves if it is boiled and the froth skimmed off[].
A warning to newcomers to these foods, however - many people find Agaves to be strongly laxative the first few times they eat them[].


The young, tender, emerging flowering shoots are still eaten in Mexico[]

This species is among the sweeter-tasting members of the genus, with little or no bitter sapogenins reported in assays. The leaves of one sample were found to contain 0.5% hecogenin, whilst several other samples were negative[].

Medicinal

None known

Other Uses

The leaves are a source of fibre , used for making cordage etc[, ].

Propagation

Seed - surface sow in a light position, mid spring in a warm greenhouse. The seed usually germinates in 1 - 3 months at 15 - 20°c[, ]. Prick out the seedlings into individual pots of well-drained soil when they are large enough to handle and grow them on in a sunny position in the greenhouse until they are at least 15cm tall. Plant out at the beginning of the growing season, and give some protection from the cold for at least their first few winters[].
Offsets and suckers can be potted up at any time they are available. Keep in a warm greenhouse until they are well established[].
Bulbils, where produced, are an easy method of propagation. Simply pot them up and plant out at the beginning of a growing season when they are 10cm or more tall.