Plant Wiki

The open plant encyclopedia

Know any plant.
Grow it well.

Snap a photo or search by any name to see how to care for it, where it comes from, whether it's safe, and a 3D model you can turn.

  • 13,000+plants with full pages
  • 365,000+plant species worldwide
  • 220+countries covered

Common in

See all

The plants people record most in your country, and ones that grow there wild.

What do you want to do?

Popular plants

Browse all plants

See them in 3D

All plants in 3D

Browse plants

Filter by what you want to do, shape, origin, country, care and safety.

Plant Wiki › Browse plants

Gregg's tube tongue

Justicia pilosella

Gregg's tube tongue
Photo: cricketsblog, CC BY 2.0

Justicia pilosella, Gregg's tube tongue, is a small hairy perennial herb in the Acanthus family, reaching about 30 cm, native to the southwestern US and east-central Mexico. It does best in full sun or part shade in fast-draining, gravelly soil that is kept on the dry side.

Family
Acanthaceae (Acanthus family)
Grows as
Perennial
Light
Full sun, Part shade
Water
Water deeply, then let the top few centimetres of soil dry out before watering again.
Soil
Sandy or gravelly, very well-drained mix.
Temperature
18-35 °C; tolerates heat and frost to about -5 °C once established.
How easy
Easy
Native range
SC. U.S.A. to C. Mexico
Climate
desert or dry shrubland

About

Justicia pilosella (syns. Siphonoglossa pilosella and Monechma pilosella), the hairy tube-tongue, Gregg's tube tongue, or false honeysuckle, is a species of flowering plant in the family Acanthaceae. It is native to New Mexico, Texas, and east-central Mexico. A perennial herb reaching 1 ft (30 cm), it is typically found growing in clearings and forest edges in rocky or gravelly soils.

Other Justicia plants

Justicia triloba · Malabar Nut · Justicia alexandri · Justicia alpina · Orange Flame Justicia · Justicia austroguangxiensis · Shrimpplant · Justicia breedlovei · Justicia bridsoniana · Justicia burchellii · Beloperone · Justicia camerunensis

Text excerpted from the Wikipedia article Justicia pilosella by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

Credits & terms

Identify a plant

Point at a leaf or flower and snap. One plant in frame works best.

Your photo
Starting camera…