CAN I (CAREFULLY!) REMOVE THE BABY BULBS AND REPLANT, EXPECT FLOWER?
It will take two or three years for the baby bulbs to reach flowering size. Continue to dig and store bulbs in fall and replant in spring.
https://www.gardeningknowhow.com/ornamental/bulbs/bgen/dividing-flower-bulbs.htm
When the bulbs bloomed last year the flowers were smaller than normal. Now i am digging and seperating the bulbs for this years planting and there are very few bulbs and they are smaller than normal.
This sounds like a case of malnutrition! It would be good to amend the soil with compost, and prepare it for planting.
This article will help with the care of the plant: https://www.gardeningknowhow.com/ornamental/bulbs/tuberose/tuberose-plant-info.htm
Here is an article on amending your soil: https://www.gardeningknowhow.com/special/organic/the-importance-of-soil-for-an-organic-garden.htm
I grow my tuber roses in pots and put them in the basement every fall and pull them out in the spring. They do exceptionally well and multiply like crazy. Can I do this with Peruvian lilies
Yes, you can grow Peruvian lilies in containers. Bring them inside for winter as you do for tuberose. Here is more information: https://www.gardeningknowhow.com/ornamental/bulbs/peruvian-lily/growing-peruvian-lilies.htm
it is being grown in a pot
You can enrich the soil in your container with compost.
https://www.gardeningknowhow.com/ornamental/bulbs/tuberose/tuberose-plant-info.htm
I assume they produce yellow flowers
Do you mean tuberose? They produce white or pink flowers in singles and doubles. You can order them from bulb catalogs. Plant them in spring.
Here are care tips:
https://www.gardeningknowhow.com/ornamental/bulbs/tuberose/tuberose-plant-info.htm
uses this. Plants are 4 to 5 years old are divided fed and watered properly.
It's likely the change in the environment has stressed the plant and it is conserving resources by not continuing to bloom. It went from the high light outside to lower light inside. The temperature changed and so did the humidity level. Some plants are more sensitive to these abrupt changes than others.
Next time you bring stems inside, give them as much light as possible and increase the humidity with a pebble tray under your vase or misting the stems daily.
Also, when you put any flower in a vase, recut the stems about an inch at an angle under water to prevent air bubbles from entering. Remove all the leaves below the water line as they will foul the water quickly. Change the water daily to rid of bacteria buildup.
For 2seasons my tuber rose had not bloomed. It is planted in a large pot that is filled with beautiful green leaves but no bloom shoots. It gets lots of sun in the Central Valley of CA. It has bloomed in the past.
Overcrowding can be a common issues to slow down or halt blooming. There could be a few other reasons, as well.
Overcrowding is a common issue that stops blooming on many plants. You can divide out, but be sure that your soil is well balanced. Too much nitrogen will make it difficult to take up potassium and phosphorus. pH can be too high or too low, as well. These are necessary to maintain get nice blooms.
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-soil.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/soil-ph-plants.htm