Rob's plants
home garden plants wildlife seed photos
plant sale journal topics plantlinks fun guestbook

Iochroma cyaneum

Iochroma cyaneum
blue trumpet flower
Iochroma cyaneum

Common name blue trumpet flower
Family solanaceae
Life cycle shrub (Z9-11)
Flowers violet (throughout warm season)
Size 12'
Light part shade

Fast-growing brugmansia relative featuring clusters of bright violet pendent trumpet-shaped flowers, which are produced freely whenever the plant is in active growth – which could be year-round in tropical climates. Here in Houston, it should survive mild winters. It prefers part shade and regular moisture, and benefits from frequent pruning, which keeps it tidy and promotes flowering. If left unpruned in sufficiently warm regions, it will grow into a multi-trunked small tree. Attracts hummingbirds. The 'Princess' variety we grow is actually a hybrid between I. cyaneum and I. australis, reportedly fast-growing to 10 ft tall. For now, it's a somewhat gangly specimen – we'll be watching its progress through the next year, assuming it survives winter.

blue trumpet flower
We purchased our plant in November 2017, which is when the flowering photos above were taken. In the following two years, it grew to well above our fence level, in good growing conditions (mostly sunny, but sheltered), with lots of leafy branches from a semi-woody trunk – not much bothered by either of recent mild winters, but stubbornly refusing to bloom. If it doesn't shape up this year, out it goes, because as a foliage plant it's not much to write home about.

Iochroma cyaneum
blue trumpet flower
Finally, in late June of 2020, some long-awaited flowers arrive, earning Io a stay of execution
Iochroma cyaneum
By the winter of 2021, our specimen had grown into a small tree, only to be felled by a strong freeze. A month later, it started to regrow from its base.
blue trumpet flower
Blooming nicely on Christmas day, 2021

In our garden, this plant grows in the following area: back fence border

About my plant portraits
PlantLinks to other web pages about Iochroma cyaneum

I welcome comments about my web pages; feel free to use the form below to leave feedback about this particular page. For the benefit of other visitors to these pages, I will list any relevant comments you leave, and if appropriate, I will update my page to correct mis-information. Faced with an ever-increasing onslaught of spam, I'm forced to discard any comments including html markups. Please submit your comment as plain text. If you have a comment about the website as a whole, please leave it in my guestbook. If you have a question that needs a personal response, please e-mail me.

Your name

Your comments

home garden plants wildlife seed plant sale topics guestbook journal plantlinks

Last modified: May 22, 2022
Contact me