Your new woody plant is likely Confederate/Star Jasmine, hardy only to Zone 9. In St. Louis (Zone 6), grow as patio plant summer, bring indoors winter. Makes excellent bonsai. Older plant may just be younger or different variety.
Jasmine and Gardenia: pH, Pot Size, and Fertilizer Errors
Jasmine Rebloom Regimen: Pruning, Dark Period & Cool Temps
Post-Bloom Jasmine Care: Sun, Water, and Fertilizer Schedule
Jasmine Multi-Pest Crisis: Aphids, Mealybugs, Fungus Gnats, Low Light
Jasmine Root Rot from Daily Watering: Likely Fatal
Indoor Jasmine Care: Light, Water, Pruning, and Forcing Winter Blooms
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