Origin and Habitat: Canary Islands (Tenerife, Gran Canaria. La Patina), Cape Verde, Madeira, and locally in western Morocco, and introduced to the Azores.
Habitat: Arid lowland areas.

• Dracaena draco (L.) L.
• Asparagus draco L.
• Draco draco (L.) Linding.
• Drakaina draco Raf.
• Palma draco (L.) Mill.
• Stoerkia draco (L.) Crantz
• Yucca draco (L.) Carrière

• Dracaena draco (L.) L.
• Asparagus draco L.
• Draco draco (L.) Linding.
• Drakaina draco Raf.
• Palma draco (L.) Mill.
• Stoerkia draco (L.) Crantz
• Yucca draco (L.) Carrière
• Dracaena boerhaavei Ten.
• Dracaena draco var. angustifolia Schult.
• Dracaena draco var. laxifolia Hayne
• Dracaena draco var. pendulifolia Hayne
• Dracaena draco var. strictifolia Hayne
• Dracaena resinifera Salisb.
• Dracaena yucciformis Vand.
• Draco arbor Garsault
• Draco clusii Crantz
• Draco dragonalis Crantz
• Oedera dragonalis Crantz
• Oedera cranziana Berens
• Stoerkia cranziana Berens

Description: Dracaena dracoSN|32990]]SN|22863]] is a woody, evergreen tree monocot that can grow to about 10-15 m in height (but exceptionally up to 21 m tall and up to 15 m in circumference at the base of the trunk). Both trunk and branches produce large, compact clusters of silvery gray leaves. Generally has a large central trunk that with age may develop a number of side branches subtending a hugely wide semiglobose umbrella-shaped canopy. Not to be confused with Dracaena cinnabariSN|22863]]SN|32990]], the Dragon Blood Tree native to Socotra.
Trunk: Silvery-grey, smooth dichotomously branched. When young the stem is single. At about 10-15 years of age the stem stops growing and produces a flower spike. Soon a crown of terminal buds appears and the plant starts branching. Each branch grows for about 10–15 years and re-branches, so to determine its age one has to know roughly how often they flower, once every ten to 15 years (maybe more frequently in the Azores), and count the number of branches, so the age of the tree can only be estimated by the number of branching points before reaching the canopy. The specimen called "El Drago Milenario" (the thousand-year-old dragon) growing in north-west Tenerife is the largest and the oldest living plant of this species. Its age is estimated to be from 250 to 365 years old, not several thousand as had previously been claimed. Being a monocotyledon, it does not display any annual or growth rings.
Leaves: Linear-lanceolate. Sessile, about 90-110 cm long and 4 cm wide, glaucous, silvery grey in compact rosettes at the apex of both trunk and branches.
Inflorescence: Flower spike loosely branched (paniculate), within the foliage mass. Flowers numerous, lily-like, greenish-white or light yellow, sweetly perfumed, in groups of 4-5. Pedicels 5-10 mm long: Perianth white, pink, crimson to greenish-white, tube campanulate, 1,5-4 mm long. Tepals 7-11 mm long. Anthers greenish.
Phenology: The plant blooms at intervals of about 10-15 years. After each flowering, the tree then branches.
Fruits: Berries, globose, on average1-1,5 cm wide coral-red in clusters.

Bibliography: Major references and further lectures
1) David Sayers “Azores” Bradt Travel Guides, 19/Oct/2010
2) Johnson, Owen y More, David; traductor: Pijoan Rotger, Manuel "Nombre vulgar preferido en castellano, en Árboles: guía de campo ed. Omega, 2006. ISBN 13: 978-84-282-1400-1
3) Chase, M.W.; Reveal, J.L. & Fay, M.F. (2009), "A subfamilial classification for the expanded asparagalean families Amaryllidaceae, Asparagaceae and Xanthorrhoeaceae", Botanical Journal of the Linnean Society 161 (2): 132–136.
4) Magdefrau, K. (1975), "Das Alter der Drachenbaume auf Tenerife", Flora 164: 347–357
5) Gupta D., Bleakley B., Gupta R.K. "Dragon's blood: Botany, chemistry and therapeutic uses" Journal of Ethnopharmacology 2007 115:3 (361-380)
6) "Dracæna draco". New International Encyclopedia. 1905.
7) Horace F Clay, James C. Hubbard “Tropical Exotics” University of Hawaii Press, 1987
8) Urs Eggli “Illustrated Handbook of Succulent Plants: Dicotyledons” Springer, 2002

Cultivation and Propagation: Dracaena draco is very adaptable and widely available as an ornamental tree for parks, gardens. It will grow nearly anywhere in warm Mediterranean climates, but prefers hot, dry, nearly desert conditions. But young plant are happy growing indoors too.
Growth rate: It grows slowly, requiring about ten years to reach 1,2 metres in height but can grow much faster.
Soils: Need very well drained soils. Give the plant an airy growing medium consists of non organic material such us clay, pumice, lava grit, and peat or leaf-mould. It like quite small pots, repott in very later winter, early spring. It will be content in its position and with its soil for years.
Fertilizing: Apply general garden fertilizer (10-30-10) including all micro nutrients and trace elements or slow release fertilizer to the planting bed at 3-month intervals, and to container plants at monthly intervals.
Exposure: Requires sunny locations.
Watering: Water regularly during the active growing season from March to September. No water should ever be allowed to stand around the roots. Keep almost completely dry in winter.
Hardiness: Some cold tolerance. This plant has tolerated temperatures down to –5ºC for very short period. However it can be difficult to get it to look its best without a good amount of heat and sun and so it is only really suited to the tropics (USDA Zones 9-11). Keep the plant cooler in winter, but maintain the light as bright as you can so that any growth which it may produce at this time will not be etiolated. It can be grown outdoors in the summer months to benefit from direct exposure to light, and especially exposure to high summer temperatures.
Wing tolerance: Has a good wind tolerance. Only downside is from very strong winds, the plants may smash to to the ground... best to plant in such a location where winds are not a big issue.
Pest & diseses: Scale and mealybugs. Rot it is only a minor problem with Dracaena if the plants are watered and “aired” correctly. If they are not, fungicides won't help all that much. It is very unlikely to lose this plant from root rot from excessive water.
Pruning: Remove dead and damaged leaves only; old leaves fall naturally from the outer limits of the leaf cluster: they may be removed easily with a light tug. Drastic pruning usually disfigures the plant.
Transplant: It is easily transplanted.
Garden uses: Not surprisingly, the extraordinary appearance of this tree has ensured it a place in parks and large gardens wherever there is a suitable Mediterranean climate. It is also cultivated as specimen plant, and as large container plant with dramatic grey foliage. It is very drought resistant but susceptible to frost. It makes a good house plants for a Dracaena, though recommend higher light if possible. Due to its drought tolerance it is used in sustainable landscape projects in arid region.
Traditional uses: When the bark or leaves are cut they secrete a reddish resin, one of the sources of the substance known as dragon's blood, used to stain wood, such as of Stradivarius violins. Dragon's blood was widely known in ancient times used as a dye, but this probably came from Dracaena cinnabanni of Socotra, and from Somalia. Other plants produce resins also known as dragon's blood and Daemonorops draco a palm from Sumatra, is the main source of the dragon's blood varnish for violins. It also has a number of traditional medicinal uses.
Propagation: May be propagated either from seeds or by cuttings. It is easy to propagate by cuttings in late spring to summer, just take a cutting of the plant let it dry for 1 or 2 weeks and stuff it in the ground (preferably dry, loose, extremely well draining soil). Place the cutting in a warm, bright and slightly humid spot, to increase the building of new roots