Thomson G1 Dragonfruit is a vigorous climbing cactus that produces exceptional sweet fruit in just 30 days from flower to harvest. This self-fertile Hylocereus guatemalensis variety, originally collected by Paul Thomson and now grown by Spicy Exotics, thrives in full sun and reaches impressive size quickly, with single cuttings growing over six feet in a single summer. The fruit itself is stunning: light green skin blushed with pink that deepens to pinkish-red as the bright purple flesh ripens, with weights averaging around 227 grams and a brix rating of 16 to 19 for exceptional sweetness. It's a variety worth growing despite its need for strategic sun management, thanks to those consistently delicious, medium to large fruits.
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What makes Thomson G1 stand out is its speed and flavor intensity. The flowers are enormous, 14 inches across with a striking white and yellow appearance, and they reliably set fruit without requiring a separate pollinator plant. Single cuttings grow aggressively, reaching over six feet in one season, while the fruit delivers a brix rating of 16 to 19, putting it among the sweetest dragonfruits available. The bright purple flesh and dual-toned exterior skin that shifts from green to pinkish-red make it visually striking, and the flavor rating of 5 out of 5 reflects what growers consistently experience when they bite into ripe fruit.
Thomson G1 dragonfruits excel in fresh eating, where their exceptional sweetness and bright purple flesh can be fully appreciated. They're equally suited to making vibrant jams, serving as striking garnishes due to their colorful exterior and interior, or blending into juices and drinks where their sweetness and moderate size make them practical to process.
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Dragonfruit is typically propagated from cuttings rather than seed. Plant rooted cuttings outdoors after the last frost date in your region, positioning them in full sun near sturdy trellising or support structures. Space plants at least 6 feet apart to accommodate their aggressive growth habit.
Harvest Thomson G1 dragonfruits when the skin shifts from light green to a pinkish-red hue, indicating the bright purple flesh inside has fully ripened. Fruits typically reach their mature weight of around 227 grams and are ready to pick 30 days after the flower opens. Simply cut or gently twist the fruit from the stem; the thick skin protects the delicate flesh during harvest and storage.
Heavy pruning is essential for Thomson G1 due to its aggressive growth habit. Single cuttings can reach over six feet in a single summer, so plan on regular pruning throughout the growing season to maintain your desired plant shape and direct energy into flowering and fruiting rather than unlimited vegetative growth. Prune selectively to maintain the climbing form and encourage branching that will bear more flowers.
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“Thomson G1 Dragonfruit traces its lineage to Paul Thomson, who originally collected this particular clone from the Hylocereus guatemalensis species. Spicy Exotics discovered and subsequently propagated the variety from a commercial tropical grower in California, recognizing its superior fruit quality and vigor. The variety's journey from Paul Thomson's initial collection to commercial cultivation represents a deliberate preservation of an exceptionally productive clone that consistently delivers high-quality fruit.”