Space Age™ Black Hole™ Rex Begonia captivates with its show-stopping silver foliage framed by bold, black, jagged edges and striking green veining. The deep burgundy-to-black center creates a stunning contrast that draws the eye to each leaf. Occasionally, small coral-red flowers emerge, adding a touch of color amidst the dramatic foliage. With its compact, mounding form reaching 15–18 inches in both height and spread, this begonia is perfect for shaded containers, patios, and indoor spaces as a houseplant.
This heat-tolerant annual thrives in zones 10–12 and is well-suited for low-maintenance gardening. It resists deer and rabbits, making it a great choice for urban and rural gardens alike. Its foliage remains attractive from spring through frost, making it ideal for borders, shaded garden beds, or as an eye-catching filler in decorative planters. Native to tropical and subtropical regions, this rex begonia adds elegance and texture wherever it is planted.
Space Age™ Black Hole™ Rex Begonia Care
Plant in part to full shade, with 4 hours or less of direct sunlight daily. This begonia prefers well-drained, moderately fertile soil with a neutral to slightly acidic pH. Water consistently, keeping the soil moist but not soggy, and allow the top layer to dry slightly between waterings. Adding organic matter at planting time can improve drainage and nutrient content. Avoid overwatering, especially in containers, as excess moisture can lead to root rot. Feeding with a balanced, water-soluble fertilizer every two to four weeks encourages lush growth and healthy leaves.
To protect the plant during cooler months in containers, move it indoors before the first frost. When kept as a houseplant, place in bright, indirect light and maintain moderate humidity levels.
Prune lightly by removing faded or damaged leaves to maintain the plant’s shape and encourage new growth. In early summer, pinching back the growing tips can result in a fuller, bushier habit. At the end of the growing season, trim back leggy stems to refresh the plant's appearance.
Space Age™ Black Hole™ Rex Begonia Spacing
Space each plant 15–18 inches apart in garden beds to allow adequate airflow and promote healthy growth. When planting in pots, choose a container at least 12 inches wide to accommodate the plant's mature size. For dramatic mass plantings or as a border accent, group the plant in threes or fives.
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Container Sizes
Please Note: The pictures below are to give a general representation of the different container sizes. The actual size/ages of plants are estimates and will vary based on type of plant, time of year, last pruning & many other factors.

3.5" Pot
Also Known As:
3.5" Container
Plant Age:
~ 6 months
Plant Size:
~ 3"-6"
Pot Size:
~ 4.5"H x 3.75"W
Volume:
~1.42 quarts

4.25" Pot
Also Known As:
4.25" Container
Plant Age:
~ 6 months
Plant Size:
~ 3"-6"
Pot Size:
~ 4.93"H x 4.25"W
Volume:
~1.56 pints

Quart Pot
Also Known As:
Quart
Plant Age:
~ 6 months - 1 year
Plant Size:
~ 4"-8"
Pot Size:
~ 4.75"H x 4.5"W
Volume:
~1.50 quarts

#1 Pot
Also Known As:
#1 Container
1 Gallon
Plant Age:
~ 1 - 2 years old
Plant Size:
~ 10"-14"
Pot Size:
~ 7"H x 7.75"W
Volume:
~2.26-3.73 quarts

Best in Class Warranty
We stand behind our plants with industry-leading guarantees to give you peace of mind.
Arrival Guarantee
We want your plants to arrive in great condition! If you notice any issues upon delivery, contact us within 3 days.
30 Days
For annuals, houseplants & vegetables, we provide a 30-day warranty to ensure that your plants thrive.

Pre-Ordered Plants
Pre-ordered plants are scheduled to ship in Spring 2025. We carefully plan our shipping dates based on your USDA Plant Hardiness Zone to ensure optimal planting conditions upon arrival. Want it sooner/later? Reach out, and we'll try our best to accommodate.
Estimated Spring Shipping Schedule
Estimated ship week for pre-ordered plants will ship based on growing zones as shown below.
Growing Zone | Estimated Ship Week |
---|---|
Zone 10 | March 24th |
Zone 9 | March 31st |
Zone 8 | April 7th |
Zone 7 | April 14th |
Zone 6b | April 21st |
Zone 6a | April 28th |
Zone 5b | May 5th |
Zone 5a | May 12th |
Zone 4 | May 19th |
Zone 3 | May 26th |
Note: These are only estimated ship dates. Plants may ship out later depending on weather & growing conditions of the plant.
Note: Only plants indicated as pre-order will ship as shown above. All other plants and hard goods will ship as normal.
Plants Shipping Now
Plants that are currently in stock typically ship within 2-7 business days after your order is placed.