My indoor Dwarf tomatoes are setting fruit now - the last week in January - and I hope to get a decent crop soon. My plants are full of blossoms and I see no signs of any disease or pests.
I use a Blossom Set spray and have not tried hand pollinating. I might try adding some Epsom Salt to the water and see if it helps.
I am using six - 6500 degree daylight T12 florescent bulbs in three 4' shop light fixtures for grow lights set for 16 hours a day. I used Pro-Mix peat based soilless growing medium and set the pots in bottom watering trays. I feed with Safer Brand Oxygen Plus Liquid Plant Food. I cover my shelf racks with inexpensive camping "Space Blankets" to serve as light reflectors.
I have been harvesting lettuce and kale for several weeks and those plants are still going strong. Winter here in South Central Alaska is only about half way over - but that doesn't stop me from growing fresh veggies all year long. What food crops are you growing indoors during the winter months? Share your advice and any special techniques that you use. I am sure there are other indoor gardeners out there and we are all interested in learning what lighting, irrigation, nutrients, and containers work for you.