I have been told that the main thing in most rooting and germinating is either cold or heat. these need heat then good light but some people root plumeria on top of there refrigerator. hey if there fresh seeds they dont take to long to sprout so you can always do just a few and see how that does. im sure you dont keep your house at 85 but you can just find the warmest part of the house. it relay is not important until the sprout them they need sun. i just set up my grow shelf went to home depot and got a new grow light cost $ 9,99 for shop light and 9 for each bulb 2 needed and its 4 ft long its very bright. i also have 2 other old 18 in long ones im posting pics.
i took my metro shelf put in front of west window for afternoon sun
then next to it i put my oil warming heater(its very safe) next to the wall and shelf
]
then i installed the lights one vertically between window and shelf and 2 hanging on the shelf's
loaded plants on the shelf
now i will take a insulating foil backed foam and put on top and down the front wich will reflect all the light back at the plants. then on the left side to trap the heat. i will run a fan in there if i need to and rotate plants when needed hoping to get the inside to about 82-85 degrees and run the lights for about 8 hrs after sun sets. if you look in the last photo you will see a little piece of the insulation.
the rest of the larger plants are in my porch on the south side so they get sun from noon till sunset for now
what sucks is some of my plants are covered with buds
oh yea that is just the adeniums i still have 12 hibiscus and 75 plumeria just covered with sheets for tonight
that was my great day and in 3 days will be 85 deg oh well that is florida and raising plants with no green house!!!