These herbaceous perennials can be between 12 inches and 5 feet tall, although some species grow up to 10 feet, and are notable for their bright flower spikes. They germinate reluctantly, making it important to plant lupines at the right time of year.
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Keep the soil moist, and place the pots in a location that receives at least eight to 10 hours of direct sun each day. If sunlight is unavailable, supplement with an artificial full spectrum, or “grow,” light.
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Some species, such as garden lupin (L. polyphyllus) and hybrids like the rainbow lupin (L. ×regalis) are common garden flowers. Lupins can be good companion plants in gardens, increasing the soil nitrogen for vegetables and other plants.
https://en.wikipedia.org/wiki/Lupinus
Treating lupine seeds increases the rate of germination and speeds up the process. Place the seeds on a layer of moist paper towels in a plastic bag, and store the bag in a cold place for a week or longer. When a shorter treatment process is required, remove a tiny chip from the seed coat and soak it in warm water for up to 24 hours.
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The simplest way to plant lupines is to sow untreated seeds directly into the ground. These should be planted outside in late autumn or during winter in warm climates.
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Collect lupine seeds after blooming when the seed pods start to turn yellow. Ripened seeds will rattle inside the pod. Place the pods in box until they explode and release the seeds. Store the seeds in a dry location until the following planting season.
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1 They prefer a moist, well-drained soil but can be grown in most garden conditions. They do not like being water logged which can rot the crown. 2  Prefer a full sun position although they can be grown successfully in light shade.  They grow to a height of 1m to 1.2m (3ft to 4ft) depending on soil and weather conditions.
http://www.gardenfocused.co.uk/shrub/lupin.php
Lupins can be grown either from seed or from cuttings. The choice of which is the best option comes down to two factors, cost and how determined you are to have to have a specific colour. Lupin seeds cost on average about £2.50 for a pack of 40 and will give you excellent plants which will be a variety of colours. The seeds should be sown in late February indoors to early April. Some of them may well flower in the first year others may only flower in the second year. White Russell type Lupins grown from seed. Lupins grown from cuttings are the only ones which will be an exact replica of the parent plants.
http://www.gardenfocused.co.uk/shrub/lupin.php
Lupine is an herbaceous perennial that flowers in the months of May and June. The plant produces 2-foot-tall flower spikes in the colors of red, purple, yellow and white, which are attractive to butterflies and bees. Lupine plants require full sun to part shade and a well draining soil. The lupine plant will reseed itself annually if the soil conditions are not too dry.
http://www.gardenguides.com/80954-grow-lupins-seed.html
Tips for growing lupins. Plant lupins when young - so that they can put down a good root system - in an open position away from trees. Lupins are not great fans of chalk. However I have managed to grow plants in the limestone soil of the Cotswolds and they flower well. Lupins prefer well-drained soil which isn’t too rich. Lupins do not take too kindly to being chopped back hard after flowering - they take months to recover. If you have a good plant, don’t let it produce lots of seeds. Keep the vigour in the parent plant and deadhead as the flowers fade. Never divide in autumn.
http://www.saga.co.uk/magazine/home-garden/gardening/plants/perennials/how-to-grow-lupins.aspx
how to plant lupin seeds
The way to plant lupine seeds is to sow untreated seeds directly into the ground.