What are the disadvantages of vertical gardens?
Written by
Paul Reynolds
Reviewed by
Prof. Martin Thorne, Ph.D.Vertical gardening systems require a significant initial investment compared to conventional gardens. Quality, free-standing units range from $200 to $600, while hydroponic towers cost over $1000. Installation costs increase due to the cost of concrete and materials for anchorage. The yearly expense of maintaining replacement parts and specialty growing soils is estimated to be between $50 and $150.
Resource Demands
- Daily watering required during summer heat waves
- Specialized fertilizers for confined root zones
- Frequent nutrient monitoring in hydroponic setups
Structural Challenges
- Weight restrictions on balconies (typically 50 lbs/sq ft)
- Wind vulnerability requiring reinforced anchoring
- Limited depth for deep-rooted vegetables like carrots
Plant Limitations
- Shallow containers restrict root development
- Incompatibility with heavy fruiting plants untrained
- Microclimate variations affecting plant uniformity
Maintenance requirements are substantially higher than those of a traditional garden. Irrigation inspections become daily events in the summer months. Nutrient loss is more rapid in confined soils. Inspections of structures are necessary to prevent collapses during storms. These requirements take time, and it is this consideration of time involvement that many gardeners do not estimate properly in the beginning.
Variations in microclimates contribute to unequal growing conditions. The upper portions dry out more readily and thereby have a higher water requirement. The lower areas are more humid and are consequently prone to disease. Temperature differences of 10°F (5.5°C) between different levels can affect plant growth. Careful location of the plants minimizes these effects.
Mitigation strategies are successful at overcoming each of these disadvantages. Instead of requiring routine labor for watering, drip irrigation with timers reduces the workload. If the system is modular, you can expand it at any time. With deep planters, medium-rooted vegetables can be grown. Ultimately, if planned, vertical systems can be worth it despite their limitations.
Read the full article: 10 Best Vertical Gardening Systems
