Recent Examples on the WebHowever, a rose left unpruned for several years can be rejuvenated by pruning.oregonlive, 8 Mar. 2022 Plants left unpruned have as many or more flowers uniformly spaced over the shrubs or trees. Tom Maccubbin, orlandosentinel.com, 12 Feb. 2022 If left unpruned for long periods of time, clematis vines can become overgrown with dead stems and dense growth that produce few flowers. Tim Johnson, chicagotribune.com, 7 Nov. 2020 Without an adequate workforce, growers may have to leave trees unplanted and branches unpruned. Laura Poppick, Scientific American, 26 Mar. 2020 Select the strongest, tallest cane and leave it unpruned. Stan Davidson, Sun-Sentinel.com, 10 July 2018 Trees went unpruned, lawns unseeded, ponds untended. Witold Rybczynski, WSJ, 10 May 2018 Bittersweet nightshade is now a plant that can be found twining its way through wet woodland edges, neglected garden corners and the unpruned hedges of North America. Dave Taft, New York Times, 27 July 2017 See More