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Gardening Tips 101: Lilacs



Their pastel blooms last only a few fleeting weeks each year. But when you bury your face in a sweet-smelling bunch … bliss. The smell of springtime could hardly be lovelier—or easier to grow.


Certainly, nothing's common about the scent of the common lilac, its heady perfume perhaps more evocative than any other floral scent. One whiff and you're tramping damp grass at a spring festival. Another, and you're lolling on a cool, comfy porch, the surrounding landscape radiant with rising green. It smells of sunshine and optimism and home.


The old-fashioned but timeless shrubs (and trees) relish the Midwest's winters and rich soil. Besides needing a solid stretch of cold to encourage their blooms in spring, they aren't greedy or fussy, and they live pretty much forever. So once you get them into the ground, just sit back and let the purple reign.


4,000 Cultivars


The genus Syringa offers broad diversity across its 26 species.


7 Colors l Lilacs bloom in a range of hues: purple, lavender, white, violet, magenta, pink and blue.


3 Size Groups l Petite lilacs, with names like Dwarf Manchurian and Korean, top out between 4 and 6 feet. Medium growers like Persian, Chinese and European lilac reach 12 to 14 feet. Tall plants, such as the Japanese Tree Lilac, can grow to 30 feet or more.


35 Days In order to flower, most varieties need a cold dormancy period of at least 850 hours (about 35 days) at temperatures below 45 degrees. Meaning, they love the Midwest.


6 Hours That's the minimum daily amount of sunlight that lilacs need in order to bloom. Full sun is best.


"They're finely textured. They have lots of flowers. They're fragrant. and they don't take over your yard." - Roy Klehm of Klehm's Song Sparrow Farm and Nursery in Avalon, Wisconsin


Planting advice


Plan Plant lilacs during spring or fall in a sunny, open spot that drains well. Good airflow around the plants helps prevent mildew and blight.


Dig Each lilac plant needs a hole as deep as its container and a foot wider. Space plants 10–15 feet apart (or 6 feet when planting a hedge).


Feed Mix a dose of rose food or slow-release, low-nitrogen fertilizer into the soil. Set the plant in the hole, fill halfway with enriched soil, then water. Repeat.


Protect Spread a mulch layer a few inches thick around the plant. Water the first year based on soil type and rainfall. After that, they should be fine on their own.


Play dress-up After the spring show, lilacs can look, well, pretty nondescript. Plant a summer-flowering vine such as clematis nearby to climb the shrub and add color.


Give it space Avoid mowing right up to the plant's base-it compacts the soil, which lilacs dislike. Instead, throw down some mulch and let the bloomer breathe.


"Smelling lilacs makes me think of the time I loaded up my now-wife's car with lilacs. She drove them down to Illinois to give away to her friends and told me, years later, that the smell almost made her sick, it was so strong. And so heavenly." Roy Klehm



Dynamite Displays


Start Head out early in the morning to collect lilacs, when the blooms are full of moisture and at their freshest.


Gather Snip part-budded, part-bloomed stems the length you want, making cuts just above where the leaves join the stem.


Recut Indoors, re-snip the stems at an angle and strip off any leaves that could touch (and then contaminate) the water.


Refresh Change container water every two or three days, re-snipping stems each time. Lilacs should last a week.


Simple Care

Prune Plan to prune just after the flowers fade in the spring. Much later, and you'll risk removing developing buds and compromising future flowers.

Maintain For most shrubs, an optimal mix is nine to 15 stems of varying ages making the base. When suckers pop up, nurture three sturdy shoots and cut off the rest.

Revive Rejuvenate an overgrown shrub by removing one-third of the oldest and thickest stems every year for three years. This will help spur new growth and bigger blossoms.

Remedy Dusty white leaves can signal powdery mildew. To treat, mix 1 tablespoon baking soda and 2½ teaspoons olive oil with 1 gallon of water; spritz every few weeks.


Call us today at 262-361-4034 with questions on gardening, or for more details on our products & services, our current special offers, and to talk to someone about partnering with Be Green Pro to keep your garden & yard looking it's best!


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(262) 361-4034

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Read Original Article By Mary Beaumont Here.

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