Answer: As you've discovered, lilacs bloom at the very tips of the newest growth. To encourage blooms all over the plant, you'll want to prune it back a bit every year. This will encourage new flowering shoots. Lilacs form their flower buds over the summer months for the following year's display so timing is everything in terms of pruning. To assure good blooming each year, prune your shrub back immediately after the flowers are spent. You should get two potentially flowering shoots at the site of every pruning cut. Hope this information helps!
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