Garden Pests and Diseases Costa Blanca

Gardening on the Costa Blanca offers many rewards thanks to its Mediterranean climate, but it also presents unique challenges. One of the most common concerns for gardeners is dealing with garden pests and plant diseases. Whether you’re growing citrus trees, rosemary bushes, or colorful bougainvillea, understanding the threats your garden may face is crucial to maintaining healthy and vibrant outdoor spaces.

Common Garden Pests on the Costa Blanca

The warm, sunny weather encourages rapid plant growth, but it also attracts a variety of pests. Below are some of the most common:

• Aphids – These small, sap-sucking insects often appear on young shoots and leaves, leading to curling and distortion. They also attract ants and cause sooty mold.
• Red Spider Mites – Especially common in hot, dry weather, these tiny pests cause speckled yellowing and leaf drop, particularly on citrus and roses.
• Whiteflies – Common in vegetable gardens and ornamental plants, they feed on sap and can cause wilting, stunted growth, and leaf yellowing.
• Caterpillars and Leaf Miners – These damage leaves and fruits, and if not treated, can cause major losses in flowering plants and vegetables.
• Mealybugs – These pests form white cottony masses around plant stems and undersides of leaves, weakening the plant over time.

How to Control Garden Pests

Here are some proven pest control strategies tailored for Costa Blanca gardens:

• Neem oil or insecticidal soap – Effective against soft-bodied pests like aphids, whiteflies, and mealybugs.
• Introduce beneficial insects – Ladybirds, lacewings, and parasitic wasps help keep populations under control naturally.
• Regular pruning – Improves air circulation and removes infected or damaged parts before pests can spread.
• Sticky traps – Useful for monitoring and reducing flying insect pests.

Common Plant Diseases in Costa Blanca Gardens

Alongside pests, certain fungal and bacterial diseases are common in coastal Mediterranean regions like Orihuela Costa, Torrevieja, and Altea.

• Powdery Mildew – A white, powdery fungus often seen on grapevines, courgettes, and roses. It thrives in hot, dry conditions.
• Root Rot – Caused by overwatering and poor drainage, particularly in potted plants or heavy clay soils.
• Leaf Spot – Fungal spots on leaves can affect many types of ornamental shrubs and trees, especially if airflow is restricted.
• Citrus Greening – A serious bacterial disease spread by psyllids. Leaves turn yellow and fruit becomes bitter or deformed.

Preventing and Treating Garden Diseases

• Improve drainage – Especially important for citrus trees and succulents.
• Water early in the morning – Avoids damp overnight conditions that favor fungi.
• Use natural fungicides – Like sulfur spray or copper-based treatments.
• Rotate crops – Helps prevent soil-borne diseases in vegetable gardens.

Best Practices for a Healthy Mediterranean Garden

Maintaining plant health is your first line of defense against both pests and disease. Here are a few key tips:

• Choose disease-resistant, drought-tolerant plants
• Inspect regularly for early signs of problems
• Mulch with gravel or bark to retain moisture and suppress weeds
• Don’t over-fertilize – excessive nitrogen can attract pests

Need Help with Your Garden on the Costa Blanca?

If your garden is suffering from ongoing pest or disease issues, Handyman Costa Blanca offers professional garden care services, including pest control, irrigation improvements, and complete garden remodeling. We service areas such as Orihuela Costa, Punta Prima, Villamartin, Torrevieja, Benissa, and Albir.

Contact us Today For Expert Advice and Hands-on help with Garden Pests and Diseases on the Costa Blanca.