Ilex guayusa GUAYUSA (plant)

Ilex guayusa is a tree belonging to the same family as the holly, the Aquifoliaceae family. Guayusa is native to the Amazon rainforest, particularly in Ecuador, Brazil, Peru, and Bolivia. It reaches 6 meters in height in its natural habitat, and its growth is very slow.

Its lightly scented foliage is evergreen and a deep, glossy green. The leaves are leathery, oblong in shape, and generally measure between 7 and 20 cm long. Unlike the common holly, their edges are smooth or very slightly serrated, but never prickly.

The flowering is discreet and delicate, occurring in spring (February/March). The flowers are small, grouped in clusters at the leaf axils. They have a white corolla composed of four to five petals fused at the base.

The fruits are small, globular berries 6 to 8 mm in diameter. They change from green to bright red, then to dark purple or even black when they reach full maturity. Each fruit contains several hard seeds.

Guayusa seeds are small and yellow; like the rest of the plant, they are highly charged with caffeine.

- Uses:

This evergreen tropical tree stands out for its leaves, which are naturally rich in caffeine and antioxidants. It is known as the "energizing tea of the Amazon." In Ecuador, Peru, and Colombia, its leaves are dried and brewed into herbal tea, offering a naturally sweet beverage. It is consumed for its stimulating effect without the bitterness of tea or coffee.

Traditionally, it is consumed in the morning to promote alertness and energy, making it an excellent alternative to coffee. It is sometimes considered a cousin of the famous yerba mate, but its taste is less bitter and has a sweeter flavor. Among indigenous peoples, it is part of rituals and serves as a key element of social gatherings.

Guayusa is ideal for lovers of rare tropical plants. Grown in a pot, it will maintain a height of 2 to 4 meters. Once well-established, it grows quite quickly. Cultivating it combines cultural interest with practical utility.

- Planting and Cultivation:

• Plant your Guayusa in a 5-liter pot with well-draining horticultural potting soil mixed with a little peat.
• Ensure the bottom of the pot is well-drained before starting the culture.
• Water copiously upon planting.
• Place it in a warm, humid, and partially sunny location.

- Soil Type / Substrate:

Guayusa requires humus-rich, deep, and slightly acidic soil, replicating the humus of tropical forests. The substrate must be perfectly draining to avoid root suffocation, while still being able to retain some moisture. A mixture of quality potting soil, heather soil (terre de bruyère), and well-decomposed compost is perfectly suited for pot culture.

- Exposure / Sunlight:

This plant prefers partial shade or bright but filtered light. In its natural habitat, it often grows under the canopy of large trees. Although it can tolerate full sun once well-established, overly intense direct radiation can burn its foliage.

- Temperatures / Hardiness:

Guayusa is a strictly tropical plant with no hardiness. It does not tolerate frost and begins to suffer as soon as temperatures remain below 10°C. Its comfort zone is between 18°C and 30°C. In temperate climates, it must be grown indoors or in a heated greenhouse throughout the winter period.

- Watering / Water Needs:

Its water needs are significant and regular. The substrate must remain fresh at all times, without being waterlogged or having standing water in the saucer. During the growing season, frequent watering is necessary.

- Multiplication:

Multiplication is mainly carried out by semi-ripe stem cuttings. This method is preferred over sowing seeds, which is often considered too slow. "Smothered" cuttings (à l'étouffée), in a warm and humid environment, are very slow (4 to 6 months) but possible. Air layering is highly recommended and can also be practiced on mature specimens.

- Pests / Diseases:

Indoors, Ilex guayusa can be a target for scale insects (mealybugs). In case of excess humidity or poor drainage, it is prone to root rot or the appearance of fungal leaf spots.