Definition of rootstock in US English:



  • 1A rhizome.

    • ‘It propagates itself by seeding and by creeping rootstock, so keep an eye on it and limit its growth.’
    • ‘Conventional tillage is effective for reducing populations of many biennial and perennial weeds that may arise from rhizomes or rootstocks.’
    • ‘Regrowth usually occurs, but this treatment will reduce competition from Canada thistle in soybeans and help prevent production of more rootstock.’
    • ‘Plants that form rootstocks can be spurred to regrowth after several years through tillage.’
    • ‘In addition, weeds left uncontrolled may harbor insects and diseases and produce seed or rootstocks which infest the field and affect future crops.’
    • ‘Since the leaves of the plant wither back during the flowering period, make sure that the tuberous rootstocks are planted among ground covers that will provide added attractiveness.’
    radicle, rhizome, tuber, tap root, rootlet
    View synonyms
    1. 1.1 A plant onto which another variety is grafted.
      • ‘A range of rootstocks was examined, with different abilities of dwarfing; both ungrafted and grafted with the same scion shoot cultivar.’
      • ‘You can bud up higher, but any new growth that appears below that bud must be removed because it will be identical to the rootstock and not the desired variety.’
      • ‘It is something of a myth that only roses that have been budded on to a rootstock by a nurseryman will grow.’
      • ‘The most vulnerable point on most rose plants is the bud union - the point at which the rose variety was budded onto a rootstock.’
      • ‘As a consequence, most people prefer to plant apple trees that have been grafted onto dwarfing rootstock.’
      • ‘You'll know a tree is on grafted rootstock if you see the graft union - a change in bark pattern or a ridge toward the base of the tree.’
      • ‘A rootstock is the bottom, rooted portion of the plant to which the upper, grape-bearing scionwood is grafted.’
      • ‘The 1999 season was devoted to orchestrating the necessary nursery work in California to get the varieties they had chosen grafted on to rootstocks suitable for their soils.’
      • ‘Rather than having been budded onto a rootstock, shrublets grow on their own roots, making these plants less susceptible to the ravages of winter.’
      • ‘Most roses today are grafted onto rootstock that won't look anything like the rose you want.’
      • ‘‘We replanted with tighter spacing, better vine selections and rootstocks,’ said Kamen.’
      • ‘All of these qualities vary with the species of fruit tree, the variety, and rootstock.’
      • ‘The bud union, where the shoots join the rootstock, should be an inch under the soil.’
      • ‘Don't confuse what I am about to explain here with the common technique of grafting flowering shrubs on to the tall stem of some sort of rootstock.’
      • ‘So growers fused English walnut grafts onto the black walnut rootstock when trees reached a certain age.’
      • ‘When we were first setting out, we grew our own rootstock and grafted the cultivars ourselves.’
      • ‘A few fruit grower associations and progressive orchardists have already started importing virus-free nursery rootstocks.’
    2. 1.2 A primary form or source from which offshoots have arisen.
      ‘the rootstock of all post-Triassic ammonites’