Goliath Garden Phlox
Phlox amplifolia 'Goliath'
Goliath Garden Phlox flowers
(Photo courtesy of NetPS Plant Finder)
Height: 30 inches
Spacing: 20 inches
Hardiness Zone: 3a
Other Names: Large-leaved Phlox
An impressive variety producing huge, pyramidal flower heads of long blooming violet-lavender florets with white eyes; blooms from mid to late summer on upright bushy plants; deadhead to promote re-blooming; a stunning addition to borders
Goliath Garden Phlox features bold fragrant conical violet round flowers with lavender overtones and white eyes at the ends of the stems from mid to late summer. The flowers are excellent for cutting. Its attractive large narrow leaves remain dark green in color throughout the season.
Goliath 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;
Goliath Garden Phlox is recommended for the following landscape applications;
Planting & Growing
Goliath Garden Phlox will grow to be about 26 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 tends to be leggy, with a typical clearance of 1 foot from the ground, and should be underplanted with lower-growing perennials. It grows at a medium rate, and under ideal conditions can be expected to live for approximately 10 years. As an herbaceous perennial, this plant will usually die back to the crown each winter, and will regrow from the base each spring. Be careful not to disturb the crown in late winter when it may not be readily seen!
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.
Goliath 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. It is even sizeable enough that it can be grown alone in a suitable container. Note that when growing plants in outdoor containers and baskets, they may require more frequent waterings than they would in the yard or garden.