Sprout some fun with our Thunbergia, aka Black Eyed Susan, Seeds! These little seeds grow into large trailing plants with iconic bright yellow flowers with "black eyes". No green thumb required. Get your green on today!
Instructions:
We recommend using the following to sow the seeds:
Thunbergia are great to grow year round, can be kept outdoors in more moderate climates, and/or indoors. These like to climb, so having a trellis is very helpful.
(Find more info on germinating seeds by going to our seed guide)
These seeds are for the 2026 growing season.
About the seeds:
difficulty
beginner | intermediate | advanced
germination time
7-21 days
depth
1/4”-1/2"
spacing
1-3 seeds per planter or 8"-12“ apart
recommended planter
6“-12" planter or box, or garden bed
time to maturity
56-63 days
seed prep
pre-soak | scarification | stratification | none
method
greenhouse | paper towel method | direct sow
temperature
>50F
About the Plants:
description
Perennial vines with blooms varying from white to yellow and orange.
