Flowering Eucharis

Mark Akimoff via pbs pbs@lists.pacificbulbsociety.net
Wed, 15 Jul 2026 22:24:15 PDT
I have had a pot of Eucharis amazonica for about 28 years, kept as a house plant in Salem, Oregon. In that time I have divided it twice, it’s only bloomed a handful of times but this past year was one of its best and I’m hoping for a repeat performance. The only thing different was that I put it out on a covered patio in September where it got night time temps into the high 40’s and low 50’s regularly. I do let it dry out pretty good in between waterings but don’t do a really big seasonal drought period. I’m going to try the patio in the fall again this year to see if the cooler temps were the trick.

Mark
Illahe Nursery and Gardens
Salem, Oregon 

> On Jul 15, 2026, at 6:04 PM, Ben via pbs <pbs@lists.pacificbulbsociety.net> wrote:
> 
> 
> 
> Would someone be kind enough to identify this bulb, which recently bloomed in my hoop house. I’m in Zone 9.
> 
> Many thanks,
> 
> Ben
> 
> 
> Sent from my iPhone
> 
>> On Jul 15, 2026, at 3:26 PM, Steve Marak via pbs <pbs@lists.pacificbulbsociety.net> wrote:
>> 
>> I sent this to Leo privately, since it's from me driving an AI and not personal experience (I haven't grown Eucharis). But as others are having the same problem - and at Leo's suggestion - I'll toss it out here with a big warning.
>> 
>> If the AI can be believed, all of the former Eucharis species (now sunk into Urceolina) come from fairly similar habitats - constantly warm, relatively high humidity, consistent rainfall most of the year. While they can survive colder temperatures and drying out, defoliation is a stress response, not something that routinely happens in nature, and not usually a trigger for flowering. It believes the correct procedure is:
>> 
>> - let the plant become pot bound
>> - let it build up a "lush canopy" of foliage
>> - *raise* the temperature - it suggests 80-85 F - and do not fertilize, or switch to a low-nitrogen, higher phosphorus food
>> - after 4 weeks, reduce the temperature back to 65-70 F (about 15 F).
>> 
>> It thinks you'll have flowers about 12 weeks later. It gave this link in support:
>> 
>> https://plants.ces.ncsu.edu/plants/…
>> 
>> Again - caveat hortulanus, AI generated content. I try to limit the sources of information an AI accesses and keep it on track by precise phrasing and hard boundaries, but in this case I didn't follow up every link it provided, or try to independently verify all of its claims.
>> 
>> Steve
>> 
>>>> On 7/15/2026 12:56 PM, Dennis Kramb via pbs wrote:
>>> Mine never bloom either.  I've followed all the expert advice.  I've even
>>> tried crazy advice like freezing it (cold winter storage).  The plant just
>>> grows lush and green no matter what.  A local university conservatory gets
>>> it to bloom in a temperature and humidity controlled greenhouse.  Perhaps
>>> the low humidity is the culprit for my persistent failure.
>>> 
>>> On Mon, Jul 13, 2026, 11:22 PM Leo A. Martin via pbs <
>>> pbs@lists.pacificbulbsociety.net> wrote:
>>> 
>>>> Does anybody have any suggestions for flowering Eucharis? I have read the
>>>> Wiki entry and I'm not convinced the recommendations for drought and
>>>> temperature stress are accurate, unless I've been applying them at the
>>>> wrong season.
>>>> 
>>>> I have a Eucharis sp. I bought for my mother over 30 years ago from
>>>> Tropiflora. The original tag is gone, but I definitely recall the catalog
>>>> said they thought it has different leaves from E. amazonica. Of course, it
>>>> may be something else.
>>>> 
>>>> She grew it in a window with bright indirect light and watered it all
>>>> year, most years. Ambient temperature did not vary much, around 72 degrees
>>>> F. At my suggestion she withheld watering in some Winters and allowed the
>>>> plant to drop all its leaves. It was fertilized about 5-6 times a year with
>>>> a 20-20-20 and micronutrients fertilizer at 1 teaspoon per gallon. During
>>>> this time it grew strongly and multiplied well. It produced one flower
>>>> once, during a year when it had been watered through the Winter.
>>>> 
>>>> I have had it two years. I have kept it much farther from a window. I have
>>>> withheld water in Winter and allowed it to wilt between waterings one
>>>> Winter, and defoliate the other Winter. When I water in Spring it produces
>>>> a luxuriant set of leaves. My household temperatures in Winter are much
>>>> cooler than in Summer, in the 50s at night / 70s in the day. Still no
>>>> flowers.
>>>> 
>>>> I wrote to Tropiflora. They replied their database does not show any
>>>> accessions other than E. amazonica. Their long-time grower has already quit
>>>> as the company shuts down, but their bromeliad specialist doesn't have any
>>>> idea what triggers flowering.
>>>> 
>>>> Leo A. Martin
>>>> Phoenix Arizona USA
>>>> Zone 9?
>>>> 
>>>> Sent with Proton Mail secure email.
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