Introduction & History

Bold, brash, and unapologetically eye-catching, 'Ketchup & Mustard' is a floribunda that refuses to be ignored. Bred by Tom Carruth and introduced by Weeks Roses in 2011, this bicolor sensation features blooms with vivid red upper petals and brilliant yellow undersides, evoking the classic condiment pairing that inspired its playful name. The color combination is striking from any distance, making it a conversation starter in every garden where it grows. While some rosarians may debate its aesthetic refinement, there is no denying its vigor, disease resistance, and the sheer fun factor it brings to the landscape. Ketchup & Mustard represents a modern trend in rose breeding toward bold, attention-grabbing varieties that appeal to a new generation of gardeners.

Breeding History

Bred by Tom Carruth and introduced by Weeks Roses in 2011 under the registration name 'WEKzazette.' The exact parentage is proprietary, but the variety draws on a line of bicolor breeding that includes 'Rainbow Sorbet' and other Carruth creations. Ketchup & Mustard was selected for its vivid, non-fading bicolor effect and strong garden performance. While it has not won traditional rose trial awards, it quickly became a bestseller through retail garden centers, demonstrating that commercial appeal and traditional exhibition merit do not always overlap. The rose won the People's Choice award at several garden shows.

Flower Form & Fragrance

Blooms are 7-8 cm across with 25-30 petals in a classic hybrid-tea-like form. The upper petal surface is vivid ketchup red while the reverse is bright mustard yellow, creating a dramatic bicolor effect. As blooms open, the red and yellow contrast becomes even more pronounced. Flowers appear in clusters of 3-5. The fragrance is mild, with a light, sweet character that is pleasant but not overwhelming. Color intensity is best in moderate temperatures and may soften slightly in extreme heat.

Garden Design & Uses

Use Ketchup & Mustard as a bold focal point or accent plant. It pairs well with solid-colored companions that echo one of its tones, such as yellow marigolds, red salvias, or golden rudbeckias. Plant against a dark green hedge or wall to maximize visual impact. It works in contemporary and playful garden designs, children's gardens, and themed plantings. Avoid combining with pastel roses or delicate color schemes where its boldness may clash. Space three plants together for a stunning mass effect.

Growth Habit & Hardiness

Upright and bushy, reaching 90-120 cm tall with a spread of 60-75 cm. The growth is vigorous with good branching. Foliage is dark green, semi-glossy, providing an excellent backdrop for the vivid blooms. Thorns are moderate. The plant produces strong basal growth and fills out well within two seasons. It can be slightly taller than typical floribundas, approaching grandiflora stature in favorable conditions. The upright habit makes it well-suited to the back of a border or as a specimen.

Climate & Hardiness

Hardy in USDA zones 5b through 9b. Performs well in a range of climates with good heat tolerance. The bicolor effect is most dramatic in moderate temperatures around 20-25C. In extreme heat above 35C, the red may darken and the yellow may soften. Cold hardiness is reliable with standard winter protection. Good rain tolerance with blooms holding up well in wet weather. Performs best in full sun with good air circulation.

Seasonal Care Calendar

Planting & Container Growing

Plant in full sun in well-drained, fertile soil with pH 6.0-6.5. Space 55-65 cm apart for group plantings. Plant the bud union 2-5 cm below soil level in cold climates. Enrich soil with compost and well-rotted manure before planting. Apply a 5-8 cm organic mulch layer. This variety is not fussy about soil type provided drainage is adequate, performing acceptably in sandy and clay soils alike with appropriate amendment.

Container Growing

Feasibility rating: Good. Needs a container at least 50 cm wide and deep due to its vigorous growth. Use quality potting compost with added perlite for drainage. Water daily in summer, ensuring thorough drainage. Feed every two weeks with liquid rose fertilizer. The upright habit may require a larger container than typical floribundas. Stake if necessary in windy locations. An excellent patio conversation piece.

Seasonal Care & Pruning

Spring: Prune to 35-45 cm, selecting outward-facing buds to maintain a vase shape. Apply slow-release fertilizer and fresh mulch. Summer: Deadhead regularly to maintain the color show. Water deeply in dry periods. Feed fortnightly. Monitor for typical pests. Autumn: Reduce watering and feeding. Allow the plant to slow naturally. Remove any diseased foliage. Winter: Apply winter mulch in cold zones. Prune out any dead or damaged wood in late winter before new growth begins.

Common Mistakes to Avoid

1. Placing it next to pastel or subtly colored roses where the bold bicolor effect creates visual discord. 2. Under-watering during bloom, which causes premature petal drop. 3. Pruning too lightly, resulting in twiggy growth with smaller flower clusters. 4. Neglecting to remove spent blooms, which diminishes the continuous color display. 5. Expecting strong fragrance, as this variety was bred primarily for visual impact rather than scent.

Propagation

Commercially propagated by budding onto rootstock. Softwood cuttings can be taken in late spring with moderate success rates around 45-55%. The variety is patented, so propagation for commercial sale requires licensing. Own-root plants tend to be less vigorous initially but establish well over time. Seed propagation will not reproduce the bicolor characteristics. Difficulty rating: Moderate to difficult, as bicolor varieties can be less predictable from cuttings.

Diseases & Pests

Disease resistance is good for a bicolor variety. Black spot resistance is above average, though preventive spraying is recommended in humid climates. Powdery mildew may appear in late summer. Rust is not typically a significant issue. Aphids may colonize new growth in spring. Japanese beetles are attracted to the bright blooms. Thrips can sometimes affect flower quality, causing petal streaking that diminishes the clean bicolor effect. Regular monitoring and early intervention keep problems manageable.

Cut Flowers & Exhibition

Cut when buds are just beginning to open to best showcase the bicolor effect. Stems are typically 25-35 cm long. Place in water with floral preservative immediately. The dramatic two-tone effect makes stunning arrangements, particularly when combined with solid yellow or red flowers. Vase life is 5-6 days. The color contrast remains vivid in the vase, making it a favorite for novelty arrangements.

Collector & Exhibition Notes

Ketchup & Mustard is widely available and not a collector's rarity. It performs best in novelty or decorative show classes rather than formal exhibition. The unique bicolor effect makes it a standout in garden display classes. It appeals to gardeners who enjoy bold, modern rose varieties. Show preparation should focus on selecting blooms at peak bicolor contrast, with clean petal edges and no heat-related color muddling.

Comparison with Similar Roses

Compared to 'Double Delight,' Ketchup & Mustard has more vivid, defined bicolor contrast but significantly less fragrance. Against 'Rainbow Sorbet,' Ketchup & Mustard offers bolder, more saturated colors while Rainbow Sorbet provides softer, pastel multicolor effects. Versus 'Sheila's Perfume,' Ketchup & Mustard has more dramatic color impact but Sheila's Perfume offers superior fragrance and more refined bloom form.

Heritage & Conservation

As a modern, commercially successful variety introduced in 2011, Ketchup & Mustard is widely available and not at conservation risk. It represents Tom Carruth's contribution to making roses more accessible and fun for the general public. The variety is maintained in the Weeks Roses collection and is available through major retail nurseries.

Cultural Significance

Ketchup & Mustard represents the modern trend of marketing roses with fun, relatable names that appeal to casual gardeners rather than traditional rosarians. It reflects a shift in the rose industry toward impulse purchases at garden centers and a broader democratization of rose growing. The playful name and vivid colors have made it a social media favorite, helping to attract younger gardeners to rose cultivation.

Frequently Asked Questions