blossoms look like little butterflies all aflutter. Most sweet peas areclimbers, but dwarf bush types are available and more appropriate for most containers. 
Branches covered in dense blossoms are sometimes sold as cut flowers in late spring, but the four-pointed flowers wilt quickly. Lilacs need to experience full sunlight at least six hours daily.5. FREESIA
Freesia is a popular bulb flower that gives off a lovely fragrance. Freesia can grow outside in full sunshine in spring and summer but you also can plant the bulbs in a well-drained soil in mid-winter.
6. HELIOTROPE
A favorite of many fragrance garden lovers, heliotrope is sometimes called Cherry-Pie Plant for its delicious aroma. The large scented flower heads, slightly reminiscent of brain coral, range in color from white to dark violet and balance atop 12-inch dark-leaved compact plants. The paler flowers often have the strongest cherry pie or sweet almond scent.
7. GARDENIA
Gardenias symbolize purity and sweetness. They indicate secret love.
Gardenias are very fragrant creamy-white flowers with glossy, dark-green leaves. Gardenia flowers are solitary or in small clusters, white or pale yellow.
Gardenias should be planted in well conditioned soil containing peat moss and compost. Gardenias need high humidity and full sun or some shading in the summer