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Hydrangea - Hydrangeas burst with tightly packed petals in bright colors during the spring and summer. They're said to have a scent similar to jasmine, but the strength of the fragrance depends on the variety you choose.

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Peony - Peony flowers grow out of dark green shrubs in spring and summer. The luscious layered flowers are so heavy that they tend to bend a little, so they may require staking, but they're so beautiful and sweet-smelling that it's worth the effort!

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Lily of the valley - The bell-like flowers of the lily of the valley bloom in spring and give off a sweet floral fragrance that travels throughout the garden. They can be white or pink.

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Gillyflower -

The charmingly named gillyflower blooms during the summer and fall. The flowers can be white, pink, mauve, or violet. They give off a strong scent that's both sweet and spicy and is often used in perfumes.

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Freesia - Freesias are a popular flower in European gardens. Their fruity scent and wide color range make them appealing to all.

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Jasmine -

Jasmine is thought to be one of the most fragrant flowers in the world. There are many different types of jasmine, but they all give off a wonderful smell. They are one of the few flowers that bloom at night rather than during the day.

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Jasmine -

There are many different types of jasmine, including Arabian jasmine, angel wing jasmine, Italian jasmine (pictured), and lemon-scented jasmine. They vary slightly in appearance and scent, so each gardener can find the jasmine that best suits their sensibilities.

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Orange jessamine -

The orange jessamine has waxy white flowers and an exceptionally strong scent (of oranges, of course). It's a compact and bushy plant, so it works well in small spaces.

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Clary sage -

Clary sage can be white, pink, or purple, and blooms in late spring over wide crinkly leaves. The flowers give off a mild scent similar to the tobacco plant.

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Chocolate vine -

The unusual semi-evergreen plant sprouts dark purple flowers that give off a unique chocolatey scent.

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Ylang-ylang -

Ylang-ylang is native to the rain forests of Asia and Australia, and is sometimes called the perfume tree. Its slightly fruity scent is often found in perfumes and scented candles.

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Lavender -

Lavender is one of the most common flowers to be used in scented products. Once planted, lavender will thrive even if it's neglected! It doesn't need too much watering, and can be grown in a garden or pot.

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Frangipani -

Frangipani, also known as plumeria, is a flower that thrives best in warm or tropical climates. Its flowers give off a pleasant scent that gets stronger at night.

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Viburnum -

Viburnum is a tough and resistant plant that blooms with clusters of white or pink flowers in the spring. There's a distinct spiciness to their floral scent.

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Flowering crabapple -

The crabapple blooms with eye-catching pink flowers in the spring. It can be grown as a small tree or shrub, and also produces small apples.

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Butterfly bush -

This aptly named plant attracts all sorts of butterflies when it blooms in the summer. It's a hardy shrub that tends to spread, but there are dwarf versions available that won't take over your garden.

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Phlox -

Phlox flowers come in shades of pink, purple, red, white, and bi-colors. The pink ones have the longest bloom time, but the white is especially fragrant.

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Rose -

Roses might seem a bit fussy, but they're not as complicated to grow as you might think! Many newer varieties of rose are excellent for insect and disease resistance. The impressive range of color options is an added bonus!

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Honeysuckle -

Honeysuckle is a popular choice among those who enjoy scented flowers. Their vines hang beautifully over a garden trellis or wall. The flowers give off distinct scents of vanilla and honey.

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Sweet alyssum -

This plant grows low to the ground and sprouts delicate flowers from mid-summer through to fall. Sweet alyssum can also be planted to cascade from window boxes or hanging baskets.

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Wisteria -

The beautiful hanging wisteria blooms in shades of blue and purple. Depending on the variety, the scent emanating from these flowers can range from mild to overpowering! They bloom in spring and late summer.

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Gardenia -

This pretty and practical shrub blooms twice a year, so you get to enjoy the scents of the flowers in late spring/early summer as well as in the fall. It's also quite easy to grow, making it the ideal choice for a novice gardener.

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Magnolia -

These sweet-smelling plants bloom in spring and summer, depending on the type. In tropical climates, it blooms all year round! Leave plenty of space when planting a magnolia though, as they can expand dramatically.

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Lilac -

Lilac is commonly found in Europe and North America. The sweet-smelling purple flower blooms in spring and summer, and also gives off a pleasant scent when cut and put in a vase. Lilac can easily be grown in a garden or container.

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Angel's trumpet -

This plant is appropriately named for its trumpet-shaped flowers that hang from drooping branches, nestled among green leaves. The flowers are a creamy orange color and give off a strong aroma at night.

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Panicle -

The panicle is another beautiful purple hanging flower. The color ranges from blue to pink to purple. The flowers give off a strong sweet smell that might be overpowering to some.

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Candle flower -

These waxy star-shaped flowers grow in hemispherical formations on hardy green foliage. The flowers are usually pink and white and give off a sweet smell at night.

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Daphne -

The daphne flower is a favorite for perfume makers. Its fragrance is particularly alluring, but they take quite a bit of care, so they're only grown by dedicated gardeners.

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Hyacinth -

Hyacinths come in a wide range of colors including yellow, red, and orange. Their pleasant scent could be compared to a mix of strawberry and honeysuckle. 

Sources: (Country Living) (Balcony Garden Web)

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