Plant Finder Tool
Selection based on Spring inventory levels and may no longer be a true representation.
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Goldmine Garden Phlox
Phlox paniculata 'Goldmine'
Goldmine Garden Phlox flowers
(Photo courtesy of NetPS Plant Finder)
Height: 24 inches
Spacing: 20 inches
Hardiness Zone: 3a
Other Names: Summer Phlox
Goldmine Garden Phlox features bold fragrant conical ruby-red star-shaped flowers at the ends of the stems from early summer to early fall. The flowers are excellent for cutting. Its attractive narrow leaves remain green in colour with showy gold variegation throughout the season. The fruit is not ornamentally significant.
Goldmine Garden Phlox is an herbaceous perennial with an upright spreading habit of growth. Its medium texture blends into the garden, but can always be balanced by a couple of finer or coarser plants for an effective composition.
This plant will require occasional maintenance and upkeep, and should be cut back in late fall in preparation for winter. It is a good choice for attracting butterflies and hummingbirds to your yard. Gardeners should be aware of the following characteristic(s) that may warrant special consideration;
Goldmine Garden Phlox is recommended for the following landscape applications;
- Mass Planting
- General Garden Use
- Container Planting
Planting & Growing
Goldmine Garden Phlox will grow to be about 20 inches tall at maturity, with a spread of 24 inches. When grown in masses or used as a bedding plant, individual plants should be spaced approximately 20 inches apart. It grows at a medium rate, and under ideal conditions can be expected to live for approximately 10 years.
This plant does best in full sun to partial shade. It does best in average to evenly moist conditions, but will not tolerate standing water. It is not particular as to soil type or pH. It is highly tolerant of urban pollution and will even thrive in inner city environments. This is a selection of a native North American species. It can be propagated by division; however, as a cultivated variety, be aware that it may be subject to certain restrictions or prohibitions on propagation.
Goldmine Garden Phlox is a fine choice for the garden, but it is also a good selection for planting in outdoor pots and containers. With its upright habit of growth, it is best suited for use as a 'thriller' in the 'spiller-thriller-filler' container combination; plant it near the center of the pot, surrounded by smaller plants and those that spill over the edges. Note that when growing plants in outdoor containers and baskets, they may require more frequent waterings than they would in the yard or garden.