The answer to your question may not be the size of the plant but the temperature where the plants are growing. Brugmansia sanguinea will bud in hot temperatures only to drop them before they open. unlike many other brugmansia species they will bloom only if the temperature is below 70 degrees F. If you have a greenhouse they will bloom all winter if protected in the greenhouse. Mine were grown one mile off the coast of Eureka CA and at age two began there blooming outdoors, I can't recall if this was before or after the "Y". It hardly ever gets above 65 degrees in the Eureka area so the bloomed almost all year. good luck and if you need more of those seeds I have plenty to trade.

Yes, they have to Y first in order to bloom when you are talking about seedlings, just as do all Brug seedings.

Patrick, If you want the sangs to bloom this fall they need to get some size to them. I have sang and aborea seedlings I started last fall . Most are about the same size of yours, but one of each I am treating like my other brugs to see if I can get some blooms this year before the first killer frost and I have to bring everything to sleep. Allison

Thanks y'all, for the responses...it's great getting input.

Allison, would you mind explaining what you meant when you said you're treating one of each like your other brugs? How do you treat your other brugs...and how is that different from the way you treat most of your sanguineas?

Thanks,

Patrick

Patrick, I am feeding them like my pinks and whites. I had a sang last year that just set buds when frost hit, and left it in the ground. It didn't make the winter, not again. Back to feeding. I feed 1-2 times a week stronger than called for. Does this answer your question? Allison

Thanks, Allison. I've decided I haven't been feeding my brugs often enough. I see a jump in growth and a deeper green color each time I do. I'd say I've been feeding every 3-4 weeks.

In general, do sanguineas not want as much fertilizer as other brugs? That's kinda my deduction, if you're saying you're experimenting with feeding the sangs as much as your other brugs.

I've noticed the sangs don't like as much sun as other brugs. Mine wilt a bit by 11AM if they're in the sun. I found a "happy spot" by placing them right at the edge of the shade/sun line on the south side of my big fir trees. They get morning sun then filtered light from late morning on.

Patrick

Patrick, Sangs feed just as heavy as the others, I just am trying to get the first blooms earlier than 2nd or 3rd year. Yes sangs donot like the sun, I have mine on the east side of the house. They get very little direct sun overthere. Allison

Hi Patrick,
Just read your post because I've been in the moving process the last few weeks. I packed up my whole house, dog, cat, parrots and of course plants. Had moving truck probs and had my plants stuck in the back of a uhaul for 3 days straight in upper 90 degrees probably alot hotter in the truck lol. Guess what? everything actually lived!! Even the red sanguinea. (Good thing most of my plants are tropicals) The top Y broke off so I stuck it in a clear cup with water and it started rooting in the front seat of the jeep lmao! My sanguinea does not like as much direct sun but does seem to like fertilizer. It is very picky about pesticides. Luckily it doesn't seem to be bothered as much by pests as the other brugs. Mine has grown so much that I am gonna have to repot it or just stick it in the ground in a shady spot with morning sun. Even though it is hot and humid here it is really green and looks healthy I figure if it is to bloom at all here it will be in the winter. If it doesn't perhaps I will try a little polar care on the roots lol.
Good luck with your babies patrick ;)

i'm so glad i found this thread. i just potted up some sang seedlings and i'm psyched.

my yellow sanguinea started blooming december 21, and i wish there are many more buds to brighten the yard all winter long.

i pollinated the flower, so i hope it forms a pod.

i potted 5 sanguinea seeds a couple weeks ago.i now have 2 seedlings,maybe an inch tall.i'm so excited about this hard to please brug.should the seedlings get direct sun?i keep the greenhouse about 52f at night,so i've been bringing them into the house at night.what temps do they like at night?is the low 50's too cool?

trigger_m, these are not heat lovers so I think you should do well. They also hate high humidity and no direct sun. We keep ours in the brug house and about 60-50 range depends on what the weather is like outside. These are planted with morning sun and shade the rest of the day here.

trigger_m, I think karmahappytoes has given you good cultural info for sanguinea plants. I do believe they handle warmer temps well during germination - my experience with starting sang. seeds was using the baggie method, indoors with a little supplemental heat and then grew them under fluorescent lights indoors until outdoor temps were ok for planting out. Maybe beginners luck, but I got quick germination and a high rate of germination, basically at temps ranging from 65-80F.

Patrick