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Houstonia caerulea
Houstonia caerulea
Houstonia caerulea
Houstonia caerulea

Houstonia caerulea

TAXONOMY

FamilyRubiaceae
GenusHoustonia
Zone4

ABOUT

Houstonia caerulea, commonly known as Azure Bluet or Quaker Ladies, is a small perennial herb native to eastern North America. It thrives in temperate climates and is often found in meadows, open woods, and along roadsides. The plant produces delicate, star-shaped blue flowers with yellow centers and has a dormancy period during the winter months.

ALSO KNOWN AS

Anotis Coerulea
Anotis Gentianoides
Azure Bluet
Poiretia Erecta
Hedyotis brachiata
Hedyotis caerulea
Hedyotis caerulea f. albiflora
Hedyotis caerulea f. benkei
Hedyotis caerulea var. faxonorum
Hedyotis gentianoides
Houstonia caerulea f. albiflora
Houstonia caerulea f. caerulea
Houstonia caerulea var. caerulea
Houstonia caerulea var. elatior
Houstonia caerulea var. faxonorum
Houstonia caerulea var. piersii
Houstonia caerulea var. toxonorum
Houstonia faxonorum
Houstonia grandiflora
Houstonia linnaei
Houstonia linnaei var. elatior
Houstonia pusilla
Houstonia serpyllifolia
Oldenlandia caerulea

OVERVIEW

WaterMoist
SoilLoamy
LightIndirect Bright (6 Hours)
Temperature20° C
Humidity60%
Dormancy3 Months
pH6.5
Pressure1,013 mbar

DETAILS

Care Instructions
Houstonia caerulea prefers moderate temperatures and indirect bright light. It thrives in environments with moderate humidity and should be watered when the soil partially dries out. The plant is relatively easy to care for and can adapt to both indoor and outdoor settings.
Soil
This plant prefers well-draining loamy soil with a slightly acidic to neutral pH. Ensure the soil is kept moderately moist but not waterlogged. Good drainage is essential to prevent root rot.
Fertilizer
Use a balanced fertilizer with a nutrient composition of 5-10-5. Fertilize the plant during the growing season, typically in spring and summer, to promote healthy growth and flowering.
Repotting
Repot Houstonia caerulea every 2-3 years or when it outgrows its current container. Choose a slightly larger pot with good drainage. Gently remove the plant from its old pot, shake off excess soil, and place it in the new pot with fresh loamy soil.
Propagation
Propagate Houstonia caerulea through division or seed. Division is best done in early spring or fall. Carefully separate the plant into smaller sections, ensuring each section has roots attached, and replant them in suitable soil. Seeds can be sown in a well-draining seed mix and kept moist until germination.
Pruning
Pruning is not typically required for Houstonia caerulea. However, you can remove spent flowers and any dead or damaged foliage to maintain the plant's appearance and encourage new growth.
Toxicity
Houstonia caerulea is not toxic to pets or humans. It is safe to grow in gardens and homes where pets and children are present.
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How To Grow Houstonia caerulea | EarthOne