A species selection guide for landscaping in the Marmara climate

How the Marmara climate shapes landscape planning

The Marmara region sits in a transition zone where Black Sea and Mediterranean climate influences meet. Coastal areas see a humid, temperate climate, while further inland winters turn colder and summers drier. This variability makes it risky to select species based on a single definition of “Marmara climate” — a project site’s distance from the coast, elevation and local microclimate need to be assessed individually.

Based in Yalova, right in the middle of this transition zone, Taxus Fidancılık produces stock under these conditions directly, which gives us hands-on observation of how species groups suited to coastal and inland conditions actually perform.

General framework of regional climate data

• Average annual temperature: temperate on the coast, more variable inland
• Winter minimums: rarely drop below -5°C on the coast, can approach -10°C inland
• Annual rainfall: unevenly distributed across the region, concentrated in winter
• Humidity: high along the coastal strip, decreasing further inland

This data reflects general trends; for any given project it should be verified against the nearest meteorological station’s records.

Wind and salinity factors

In coastal landscape projects, salt particles carried by wind are a significant source of stress that damages leaf tissue. Within roughly 200-500 metres of the shoreline in particular, salt-sensitive species can show leaf scorch, early leaf drop and stunted growth.

Species grouped by salt tolerance

Tolerance level	Example species groups	Recommended use
High	Olive (Olea), tamarisk, maritime pine (Pinus pinaster)	Coastal strip, windbreak
Moderate	Cypress (Cupressus), some Thuja cultivars	300 m+ from the coast
Low	Sensitive-leaved ornamentals, some shrub species	Inland, sheltered from wind

Establishing a first line of highly salt-tolerant species along the coastal strip to act as a windbreak protects the more sensitive species planted behind it.

Frost risk and species hardiness

Moving inland, winter night temperatures drop noticeably and frost risk increases. Frost damage is usually most visible in young shoots, newly planted stock, and species that flower early in spring.

Steps to reduce frost risk

1. Assess the project site’s winter minimum temperature data using at least a 5-10 year average
2. Place frost-sensitive species on gentle slopes or in wind-sheltered spots rather than low-lying hollows
3. Mulch the root zone of newly planted stock through its first winter
4. For early-flowering species, monitor bud development against the risk of late frost
5. For critical projects, prefer locally sourced stock with tested frost tolerance

Soil structure and drainage

Soil structure across the Marmara region tends toward sandier-loamy profiles on the coast and higher clay content further inland. In clay-heavy soils, drainage problems pose a serious risk for species sensitive to root rot. Soil analysis and a drainage test are recommended before finalising species selection.

General species compatibility by soil type

Soil type	Drainage characteristic	Species tendency
Sandy-loamy	Fast drainage	Drought-tolerant, salt-tolerant species
Clay-loam	Moderate drainage	Most standard landscape species
Heavy clay	Slow drainage, waterlogging risk	Species tolerant of moist soil and resistant to root rot

Rather than forcing species selection to fit poorly drained sites, it is more sustainable to improve the infrastructure (drainage lines, raised planting beds) to bring the soil up to what the species needs.

Recommended species groups for coastal and inland sites

The table below summarises general tendencies; the final species decision for any project should be based on a review of local site conditions.

Site type	Key characteristic	Example species groups
Coastal strip (0-300 m)	Salt and wind tolerance	Olive, tamarisk, maritime pine
Coastal-inland transition	Moderate salt tolerance, good drainage	Cypress, Thuja, some Ligustrum cultivars
Inland, plains	Frost tolerance, standard care	Yew (Taxus), various deciduous species groups
Inland, higher elevation	High frost tolerance	Local pine species, hardy conifers

Seasonal water needs by species group

Summers in the Marmara region are generally dry, and water needs vary noticeably by species group during this period. Drought-tolerant species (olive, tamarisk, some conifers) can manage with low-frequency watering through summer, while moisture-loving species need regular, more frequent irrigation. When selecting species, matching plant water needs to the project’s irrigation infrastructure capacity also matters for operating costs.

General species tendency by water requirement

Water requirement level	Example species groups	Irrigation approach
Low	Olive, tamarisk, drought-tolerant conifers	Infrequent, deep watering once established
Moderate	Cypress, Thuja, most standard shrub species	Regular, evenly spaced watering
High	Moisture-loving broadleaf ornamentals, lawn areas	Frequent, controlled watering

In projects that make heavy use of low-water-need species, designing the irrigation system around that need — for example, a drip programme with longer intervals — both saves water and reduces the risk of root rot.

What to watch during implementation

Once species selection is settled, planting timing and the first-year care plan should also be adjusted for the regional climate. On the coast, regular flushing irrigation is recommended against summer humidity and salt stress; inland, pre-winter mulching and reduced watering frequency are more relevant.

Pre-implementation checklist

1. Determine the project site’s distance from the coast and its elevation
2. Commission a local soil analysis and drainage test
3. Review winter minimum temperature data for the past 5-10 years
4. Map out areas that require salt tolerance
5. Narrow the species list against this data and confirm practical feasibility on site

Microclimate effects and project-scale assessment

Regional climate data shows the general trend, but even within the same district, or the same street, factors such as building shade, a wind corridor, or a nearby body of water can create noticeable microclimate differences. A north-facing garden corner sitting in a building’s shadow, for example, can stay several degrees colder than the same garden’s south-facing side — a difference that can decide whether a frost-sensitive species survives in that corner.

What to check in a microclimate assessment

• The shading and wind-corridor effect created by buildings and tall structures
• The moderating effect of a nearby lake, sea or large body of water
• The site’s aspect (south, north, east, west) and hours of sun exposure
• The risk of cold air pooling in low-lying areas (frost pockets)
• The heat-island effect that builds up near hardscape (concrete, asphalt)

These factors can mean different zones within the same project call for different species groups. In a villa garden, for instance, more frost-tolerant species might suit the north-facing side while more heat-loving species suit the south-facing side. The right decision at project scale comes from combining general regional data with direct microclimate observation of the site itself.

Monitoring species adaptation

A newly planted species’ adaptation to the site should be monitored closely for the first 1-2 years. The first winter and first summer in particular are the most critical periods for revealing a plant’s true hardiness. If symptoms such as leaf scorch, shoot-tip dieback or stalled growth appear during this period, the species choice may need to be reassessed within the scope of the project.

Conclusion

A successful landscape project in the Marmara region depends not on general climate assumptions but on species selection grounded in the project site’s own wind, salinity, frost risk and soil data. At Taxus Fidancılık, we grow species groups suited to these conditions across our production areas in Yalova, Terkos, Bursa and Sakarya, and offer project-based species recommendations. For further information, reach us at +90 539 438 29 87 or info@taxustr.com.