Answer: Euonymus cultivars tend to revert back to the species, so an older plant may not look like it did when originally planted. What you describe sounds like Euonymus fortunei 'Harlequin', a dwarf evergreen creeping vine with variegated green & white leaves, with pink fall & winter highlights, for year-round interest. The oval leaves are littler & flatter than most varieties within this species. Other possibilities are 'Minimus' - This is an older, low-growing form with very small leaves (less than 0.5" long). Very often there will be branch reversions to the species. Commonly used as a groundcover; or Euonymus fortunei var. radicans - This variety is a variable form that usually forms a low, trailing groundcover or climbing vine. The leaves are shiny green and the plant may flower and fruit. The plant produces variegated sports spontaneously, and overall this variety is unstable.
In some areas of the country, creeping Euonymus is considered invasive and is therefore difficult to find in nurseries. If you have a plant you really love, you can propagate it by cuttings or layering, or dig one of the rooted portions up and plant it elsewhere - it should increase in size within the first growing season.
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