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Backyard Gardener: Heliotropium aborescens (Iowa Heliotrope)
Provides data on the distinguishing characeristics of the plan. Includes care tips, watering and fertilizing.
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Floridata: Heliotropium arborsecens
Provides information on the properties of the plant. Includes culture, distribution, propagation and images.
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Missouri Botanical Garden: Heliotropium arborescens
Provides information on the distinguishing properties of the plant. Includes culure, noteworthy characteristics, problems and uses.
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PlantzAfrica.com: Ehretia rigida
Contains information on the distinguishing of the plant. Includes history, distribution, ecology, cultural value and images.
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Stuartxchange: Tsaang gubat - Ehretia microphylla Lam.
Contains information on the botany, distribution, uses and availability. With photos.
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United Sates Department of Agriculture: Heliotropium curassavicum L. salt heliotrope
Offers information on the profile of the plant. Includes distribution, growth habit, classification and images.
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White Flower Farm: Heliotropium (Heliotrope)
Presents information on the distinguishing characteristics of the plant. Includes growing guide, pruning and fertilizing.
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Wild Flower Center: Ehretia anacua (Teran and Berl.) I.M. Johnston
Offers description on the physical characteristics of the plant. Includes distribution, growth, propagation and remarks.