Hylocereus sp. - video

Red Pitaya with white flesh. David Bowie is a slender white variety that has a sweet and tangy flavor that is somewhat lemony. The fruit are medium to large weighing up to a pound. This variety is best eaten fresh, but it would be good for juicing or garnishing as well. It is variety is self pollinating.
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What to do with a Dragon fruit?

Eureka Red Dragon Fruit is a large self pollinating red flesh fruit, originally from Nicaragua. It is most similar to Natural Mystic

Halleys Comet is a hybrid of a white fleshed and red fleshed fruit. It is incredibly large, typically weighing 1.5-2.0 lbs. The fruit is slightly more rounded than the Physical Graffiti, and the fins are more abbreviated. In all other respects they are nearly identical.
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What to do with a Dragon fruit?

Sweet Red Pitaya, Dragon Fruit. Self-fruiting variety, red outside and red inside - the most delicious variety. Very fast-growing.
Pitaya is a highly prized, vining, fruit bearing cactus, extremely unusual terrestrial/epiphytic plant. It has magnificent flowers, stunningly beautiful fruit with an intense color, curious shape, and a delicious taste. The night blooming white flowers can be up to 14 inches in length.
The fruit is most often eaten chilled and cut in half so the flesh may be spooned out. The juice is used in frozen drinks and it is in a new Tropicana Twister flavor. It is a must have for any collector or gardener with the flair for the unusual.
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Pitaya page
What to do with a Dragon fruit?