I would take apart that branch and start a new pot. The main plant probably needs to be repotted. Clean out as much as the old potting mix you can, trim the roots a bit and put it in a new fast draining mix. You can search 5-1-1 mix here and repotting. There are lots of explanations. If you are on Facebook there is a group called Holiday Cactus Lovers group with lots of helpful people. Most of them prefer to repot using a fifty fifty mix of potting soil and perlite. If you repot, tale your time and read up here. I'm happy to answer specific questions if you need it. My weekend will be busy so it might take a bit before I respond. If the clades on the fallen branch are withered, sometimes they can be saved by putting them i a ziplock baggie full of water for a day or two. Just flip the bag every day. I actually forgot about one for about two weeks and it had sprouted roots. Good luck!

it is said.. you arent a gardner.. a real green thumb ... until you have killed EVERYTHING.. 3 times ... [so next time.. get multiples of 3 acorns.. one to try. and some to store in case you fail .. lol] that is how most of us learned .... and i fear.. that too many newbies.. think the computer is some panacea.. where they will never fail ... good luck with that ... are there any buds on your tree ... right were the leaves attached???? if this is a deciduous tree.. and you grew it in the house all winter ... its not uncommon.. for it to lose its leaves .... listen to me.. READ THIS .. growing trees in pots is hard growing trees in pot.. indoors.. is even harder... growing trees in pot indoors.. in poor media is even harder ... it took me 30 years .. without the WWW to research.. to grow tree in pots successfully.. and you are all bummed out after one try ... whats that all about ... go to a nursery.. get 10 one gallon pots from the recycle bin ..... buy some cactus mix .... and try growing some trees outdoors in the shade this year ... and if you succeed .. then think about how to get more acorns .... to try this again ... NEVER LEAVE A BLACK POT WITH A TREE IN THE SUN.. worse than too much water.. trees do NOT like cooked roots .... and while you are at it.. chuck this one outside.. in full shade.. and water it properly .... and who knows.. maybe it just went dormant .. and will bud back out ... whatever you do.. do NOT give up ... we cant let these things beat us .... ken

Lilacs, my first thought when I find a grub in the lawn is that it is a cutworm. Some cutworms overwinter as immature larvae but they are not white. The location in which you found the grubs make me suspect that rather than lawn pests, what you've uncovered may be fruit tree pests. I can't seem to come up with any real good ideas. My best guess is that they are Oriental fruit moths. You can read more about them at the link below. To read about fruit moths and all sorts of other pests in crops, the University of California has a real good starting point at http://www.ipm.ucdavis.edu/PMG/crops-agriculture.html The problem you present with your little white grubs is that these are apparently larvae and they've either overwintered in your soil as larvae or, perhaps, as eggs. Your soil is now sufficiently warm for the eggs to hatch or the larva to become active. Many suspect insects either overwinter as adults or pupae or they do not overwinter in the soil or on the ground. Other possibilities are coddling moths or leaf-roller larvae. If you have apple trees nearby, I'd think the darn coddling moth would be the best candidate. Your question should be pondered by others for an answer. But, one thing you could do is bring those little grubs indoors and allow them to pupate and emerge as adults and then identify those guys. Sounds like a fun project for the nearest elementary student, huh? DigitS Here is a link that might be useful: Oriental Fruit Moths

At this site, it uses the misspelled name, but mine looks like the first picturepictured "rauschii" and I think eww's looks like "snowflake" but I could be misremembering. There is another called rauschii sp. (The last picture in that species group) and it is much larger than in the description. The pot is 3-4 inches, so unless the "rosette" doesn't include all the way to the tips of the leaves, then mine is bigger than that. it could look like the last onepictured by Rina. Do you have pictures of those flowers, Rina? Maybe I'll Google those two species' flowers and compare them to the flowers I have.