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Black-Eyed Susan in the GardenTags plant encyclopedia

Thunbergia alata

 

Black-Eyed Susan

Thunbergia - Black-Eyed Susan - is a climbing plant with heart-shaped green leaves, and simple 5-petalled flowers, mostly in shades of yellow, orange or white, with a dark purplish-brown centre. flowering from early Summer to early Autumn

 
plant Features
  • Black-Eyed Susan likes full sun

    Full sun

  • Black-Eyed Susan likes occasional watering

    Occasional watering

  • Black-Eyed Susan is frost hardy: 23f (-5°c)

    Frost Hardy: 23F (-5°C)

  • Black-Eyed Susan likes moist and free draining

    Moist and free draining

 
Similar plants are available to buy from 4 store(s) in the UK
 
plant information

Common name

Black-Eyed Susan

Latin name

Thunbergia alata

type

Climber

family

Acanthaceae

ph

5.6 - 7.9 Acid - Neutral

  • Light

    Black-Eyed Susan likes full sun

    Full sun

  • Frost

    Black-Eyed Susan is frost hardy: 23f (-5°c)

    Frost Hardy: 23F (-5°C)

  • Soil

    Black-Eyed Susan likes moist and free draining

    Moist and free draining

  • Water

    Black-Eyed Susan likes occasional watering

    Occasional watering

Plant & bloom calendar

  •  
    Best time to plant
  •  
    When the plant will bloom

full grown dimensions

The size of a fully grown Black-Eyed Susan is 1.00meters x 2.00meters 1.00 M 2.00 M

Thunbergia alata

Thunbergia - Black-Eyed Susan - is a climbing plant with heart-shaped green leaves, and simple 5-petalled flowers, mostly in shades of yellow, orange or white, with a dark purplish-brown centre. flowering from early Summer to early Autumn


Flowering Season

From Early Summer TO Early Autumn

Yellow-orange flowers with a black eye.

 

Planting Season

From Mid Spring TO Late Spring

Plant out container grown plants into a sunny, moist and reasonably sheltered flowering position.

 

Propagation by Seed

From Late Winter TO Mid Spring

Fill a seed tray with seed compost,water and allow to drain.Sprinkle seeds over the surface allowing roughly 25mm space between seeds and cover with a thin layer of compost. Put tray in a clear polythene bag and place on a windowsill. When seedlings show remove plastic bag.When the second pair of leaves appear on the seedlings thin out to 50mm spacing by removing the weakest looking plants. After 2 or 3 weeks and when danger of frost has passed plants can then be planted outside into required position.

 

Propagation by cuttings

From Mid Spring TO Early Summer

Take soft wood cuttings in spring to early summer. Cleanly cut up to a 10cm long stems, remove lower leaves and pinch the tip out, dip the stem into rooting hormone, fill a container/pot with suitable compost, make holes around the edge of it and plant the cuttings, water in well, cover with a polythene bag and place somewhere warm, lake the bag off twice a week to air the cuttings. Keep the cuttings moist until well rooted.Harden off when well rooted and pot on into individual pots increasing the airing to let the leaves to develop. Remove rotten, dying or dead cuttings regularly.

 
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