**Iris 'Black Gold' (Iris chrysographes) Flower Seeds** produce a striking and elegant variety of iris known for its unique dark coloration and intricate pattern. Here's a detailed description:

1. **Plant Type**: *Iris chrysographes*, commonly known as the Black Gold Iris, is a perennial plant that belongs to the iris family (*Iridaceae*). This variety is highly prized for its dramatic flowers and striking color contrast.

2. **Flower Appearance**: The *Iris 'Black Gold'* is known for its deep, velvety purple to almost black petals, which are complemented by golden-yellow markings. The flowers have an intricate design, with a rich, dark base color accented by vibrant golden veins running through the petals, particularly on the falls (the lower petals of the flower). The bloom's contrast between dark and light creates a captivating visual effect.

3. **Growth Habit**: The Black Gold Iris typically grows between 18 to 30 inches in height, producing long, upright stems topped with 3 to 5 flowers each. It forms long, sword-like leaves that add to its architectural beauty, making it an excellent plant for borders, rock gardens, or even in containers.

4. **Blooming Season**: *Iris chrysographes* blooms in late spring to early summer (usually May to June), depending on the growing zone. The flowers last for several weeks, with multiple blooms appearing on each stem, making it a show-stopping addition to any garden.

5. **Growing Conditions**: This iris variety thrives in well-drained, slightly acidic to neutral soil, preferably rich in organic matter. It requires full sun to produce its best blooms, but it can tolerate some light shade. The plant benefits from moderate watering, though it does not like to sit in waterlogged soil.

6. **Uses**: *Iris 'Black Gold'* is a popular ornamental plant, often used in garden borders, mixed beds, and as a specimen plant. Its dramatic coloration and striking flower shape make it a favorite for flower enthusiasts and gardeners looking for an eye-catching addition to their garden.

7. **Care Tips**:
   - **Light**: Full sun is best for the richest flower color and most vigorous growth.
   - **Watering**: Water regularly to keep the soil moist but well-drained. Avoid waterlogging, as it can cause root rot.
   - **Soil**: Prefers slightly acidic to neutral, well-drained soil enriched with organic matter.
   - **Temperature**: It thrives in moderate to cool climates and is cold-hardy, making it suitable for most temperate regions.

**Iris 'Black Gold'** (Iris chrysographes) is an excellent choice for gardeners who want a striking, dark-toned iris with a luxurious golden accent, making it a true showstopper in any garden. Its unique color contrast and elegance add sophistication and charm to garden landscapes.