Apostle 'Blue Walking' Iris

Apostle 'Blue Walking' Iris (Neomarica caerulea)

A native to the rainforests of Brazil, the Apostle 'Blue Walking' Iris offers a spectacle for the senses with its vibrant blue flowers. This perennial, characterized by its mesmerizing blooms and iris-like foliage, often graces gardens, and landscapes, captivating onlookers. It derives its name "Apostle Plant" from the belief that it flowers when the plant has 12 leaves, symbolizing Jesus' apostles.

Common Names:

Besides its scientific designation, the plant is also recognized as the Walking Iris, attributed to its unique propagation style where the stalk bends to the ground, allowing the baby plants to root and "walk" away from the parent. Apostle Plant and Blue Flag Iris are other common names, showcasing its beauty and religious symbolism.

Best Growing Environment:

The Apostle 'Blue Walking' Iris prefers rich, well-draining soils to mimic its natural rainforest habitat. Humus-rich or loamy soils, which retain moisture without becoming waterlogged, are the most suitable.

Average Height:

On maturity, the plant can reach a height ranging between 1.5 to 3 feet, providing a medium-sized architectural feature suitable for garden mid-borders or background plantings.

Growth Rate:

The Apostle Iris presents a moderate growth rate. With appropriate care, it will form clumps which can be divided for propagation or to maintain the plant's size and vigor.

Sun Requirements:

Originating from the understories of rainforests, the plant does best in partial shade but can tolerate full sunlight in cooler climates. A daily regimen of 4-6 hours of filtered sunlight is ideal for this iris.

Cold Hardiness:

Although its native environment is tropical, the Apostle 'Blue Walking' Iris can tolerate temperatures down to about 30°F (-1°C). In regions prone to frosts, it's recommended to plant it in a location sheltered from cold winds or to bring container-grown specimens indoors during cold snaps.

Water Requirements:

This iris thrives in consistently moist conditions. While it's drought-tolerant once established, regular watering, especially in dry spells, ensures lush growth and optimal flowering.

Detailed Fertilizing Guide:

1. Spring: Start the growing season with a balanced, slow-release fertilizer like a 10-10-10 to invigorate new growth.
2. Mid-Summer: As the plant prepares to flower, offer a high-phosphorus liquid fertilizer to boost bloom production.
3. Late Fall: Another application of a balanced fertilizer can assist in storing energy for the subsequent spring.

Planting Guide:

1. Site Selection: Choose a location with good drainage and filtered sunlight.
2. Planting Hole: Dig a hole twice the width of the root ball and of similar depth.
3. Positioning: Position the plant ensuring its crown aligns with the soil surface.
4. Soil Backfill: Refill, press gently around the plant's base, and provide ample water.

USDA Zone:

The Apostle 'Blue Walking' Iris is best suited for USDA hardiness zones 9 through 11. In cooler zones, consider overwintering the plant indoors or using mulches to protect its roots.

The Apostle 'Blue Walking' Iris is not just a plant; it's an experience. Its unique propagation method, coupled with its symbolic significance and enchanting blooms, make it a favorite among plant enthusiasts and casual gardeners alike. Proper care ensures it remains a mesmerizing feature in gardens for years to come.