Houstonia Plants — Species, Care & Identification
Houstonia is a plant genus in the Rubiaceae family. PlantoScan has care guides for 19 species in this genus. Each guide covers watering, light, soil, hardiness zone and pet toxicity, with sources.
Houstonia species
Purple Bluet
Houstonia purpurea
Dan VickersCC BY 4.0iNaturalistresized
- Desert BluetHoustonia acerosaPlantoScan
Desert Bluet
Houstonia acerosa
- BluetsHoustonia caeruleaPlantoScan
Bluets
Houstonia caerulea
- Canada BluetHoustonia canadensisPlantoScan
Canada Bluet
Houstonia canadensis
- Correll's BluetHoustonia correlliiPlantoScan
Correll's Bluet
Houstonia correllii
- Houstonia croftiaeHoustonia croftiaePlantoScan
Houstonia croftiae
- Longleaf BluetHoustonia longifoliaPlantoScan
Longleaf Bluet
Houstonia longifolia
- Smallflower BluetHoustonia micranthaPlantoScan
Smallflower Bluet
Houstonia micrantha
- Palmer's BluetHoustonia palmeriPlantoScan
Palmer's Bluet
Houstonia palmeri
- Smallflower BluetHoustonia parvifloraPlantoScan
Smallflower Bluet
Houstonia parviflora
- Creeping BluetHoustonia procumbensPlantoScan
Creeping Bluet
Houstonia procumbens
- Small BluetHoustonia pusillaPlantoScan
Small Bluet
Houstonia pusilla
- Red BluetHoustonia rubraPlantoScan
Red Bluet
Houstonia rubra
- Thymeleaf BluetHoustonia serpyllifoliaPlantoScan
Thymeleaf Bluet
Houstonia serpyllifolia
- Sharpe's BluetHoustonia sharpiiPlantoScan
Sharpe's Bluet
Houstonia sharpii
- Spellenberg's BluetHoustonia spellenbergiiPlantoScan
Spellenberg's Bluet
Houstonia spellenbergii
- Ciliate BluetHoustonia subviscosaPlantoScan
Ciliate Bluet
Houstonia subviscosa
- Tereteleaf BluetHoustonia teretifoliaPlantoScan
Tereteleaf Bluet
Houstonia teretifolia
- Wright's BluetHoustonia wrightiiPlantoScan
Wright's Bluet
Houstonia wrightii
Browse other genera starting with H, the plant genera A–Z, or the complete plant care guide.