Photo by Melody

PlantFiles: Iochroma
Iochroma cyanea 'Royal Blue'

Family: Solanaceae (so-lan-AY-see-ee) (Info)
Genus: Iochroma (eye-oh-KROH-muh) (Info)
Species: cyanea (sy-AN-ee-uh) (Info)
Cultivar: Royal Blue

Synonym:Iochroma cyaneum
Synonym:Iochroma tubulosa
Synonym:Iochroma tubulosum

3 vendors have this plant for sale.

21 members have or want this plant for trade.

Tropicals and Tender Perennials

6-8 ft. (1.8-2.4 m)

4-6 ft. (1.2-1.8 m)

USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)
USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)
USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:
Full Sun

All parts of plant are poisonous if ingested

Bloom Color:

Bloom Time:
Blooms repeatedly


Other details:
Unknown - Tell us

Soil pH requirements:
Unknown - Tell us

Patent Information:
Unknown - Tell us

Propagation Methods:
Unknown - Tell us

Seed Collecting:
Unknown - Tell us

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There are a total of 15 photos.
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1 positive
1 neutral
No negatives

Gardeners' Notes:

Neutral MTVineman On Apr 16, 2012, MTVineman from Helena, MT (Zone 5a) wrote:

Was reading the previous post about the hummers not responding to the Iochroma growing in the Stockton, CA area. I don't know if this helps or is the reason but.....I grow a lot of strange tropicals and other flowers and plants that are not native here in Montana where I live. What I've noticed by watching the hummers closely is that if they don't recognize a plant right away, they'll usually buzz right on by. I think they have to get used to odd plants first before they'll dare to explore it and perhaps take a drink. I know it sounds weird but I really think it's the case in some instances. Now that I have had Brugs and Tecoma's and a few other tropicals and sub tropicals outside for the spring and summer for a few years, my hummers are getting curious and are actually beginning to drink from a few of them. They especially like my Manettia lutea vine which they'd always ignored before. Just a thought........

Positive PudgyMudpies On Jan 5, 2008, PudgyMudpies from Stockton, CA (Zone 9a) wrote:

I really like this plant. I find it does best in full sun. Have not seen any of the numerous hummingbirds in my area show an interest in the iochroma, which surprised me as I had read somewhere that they would be interested. This plant is really a tall, lanky shrub that needs some support to look nice. I have not attempted to prune it small to see if it would get bushy because I did not want to lose blooms. It freezes back every winter and sprouts from the roots in the Spring. I have grown these in pots and had poor success. They thrive in ground and do not bloom in partial shade for me. I think the reason they don't like to be in pots is because they develop a huge root system that fills the pot quickly and then needs constant water to sustain it. In the ground, the normal sprinkler waterings are enough. I have had a problem with aphid, scale & mealy bugs, basically, if the pests like my Brugmansia plants, they like these. Has responded well to systemic fertilizer that I use for roses, and also has no problems with soapy water or rubbing alcohol that I use for spraying pests.


This plant has been said to grow in the following regions:

Carlsbad, California
Concord, California
Encinitas, California
Long Beach, California
Novato, California
San Jose, California
San Leandro, California
San Mateo, California
Stockton, California
Vista, California
Boca Raton, Florida
North Fort Myers, Florida
Odessa, Florida
Saint Petersburg, Florida
Utica, New York
Humble, Texas
Spring, Texas

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