Gardenia ‘Miami Supreme’ Standard 15G

Gardenia ‘Miami Supreme’ Standard – Gardenia jasminoides ‘Miami Supreme’ (15 Gallon Pot) available in Jupiter, FL.
Elevate your garden with the elegance and fragrance of the Gardenia ‘Miami Supreme’ Standard. This 15-gallon specimen features a trained single trunk topped with a lush, rounded canopy of deep green foliage and oversized, velvety white blooms that release a rich, sweet perfume. Known for its show-stopping size and scent, this gardenia variety is one of the most impressive cultivars available, and it performs beautifully in South Florida’s subtropical climate.

Part of the Rubiaceae family and Dicotyledonae class, Gardenia jasminoides ‘Miami Supreme’ is a beloved ornamental shrub native to Asia but well-adapted to warm, humid environments. The ‘Miami Supreme’ selection is prized for its enormous flowers—up to 5 inches across—that bloom repeatedly throughout the warm season.

Key Features:

• Botanical Name: Gardenia jasminoides ‘Miami Supreme’

• Family: Rubiaceae

• Class: Dicotyledonae

• Pot Size: 15 Gallon

• Growth Form: Grafted Standard (tree form)

• Mature Height: 5–6 feet

• Spread: 3–5 feet

• Bloom Time: Spring through fall (intermittent reblooming)

• USDA Zones: 8–11 (ideal for South Florida)

Sunlight Needs:
Best in full sun to part shade. In South Florida, provide morning sun and some afternoon shade to prevent leaf scorching and prolong flower life.

Watering:
Requires consistent moisture, especially during the first year. Water deeply 2–3 times per week in well-draining soil. Once established, maintain evenly moist soil—never let it fully dry out. Gardenias are sensitive to overwatering and poor drainage.

Soil Requirements:
Thrives in rich, well-draining, acidic soil (pH 5.0–6.0). Gardenias are acid-loving plants—consider amending with pine bark, peat moss, or elemental sulfur to maintain proper pH. Avoid alkaline soils or hard water, which can cause yellowing leaves.

Fertilization:
Feed monthly from March through October with an acid-loving plant fertilizer. Look for blends designed for azaleas or camellias to support lush foliage and prolific flowering.

Pest & Disease Tips:
Monitor for common pests such as whiteflies, aphids, and spider mites. Scale insects may appear on stems—treat with neem oil or horticultural soap. Good air circulation reduces the risk of fungal leaf spot and root rot.

Pruning & Maintenance:
Lightly prune after blooming to shape the canopy and encourage bushier growth. Deadhead spent flowers to promote reblooming. Mulch with organic matter to retain soil moisture and protect roots from heat.

Special Notes for South Florida Gardeners:

• Excellent as a focal point in entryways, patio containers, or formal gardens.

• Fragrance is strongest in the evening—plant near seating areas or walkways to enjoy its full effect.

• Benefits from occasional iron supplementation to prevent chlorosis in high-pH soils or municipal water.

• Pairs beautifully with caladiums, ferns, or shaded flowering annuals.

Jupiter Farms & Nursery