How does cedar outdoor flower box resistance to algae growth compare to teak?

When choosing outdoor flower boxes, resistance to algae growth is a key factor for durability and low maintenance. Cedar and teak are two popular wood options, but how do they compare in preventing algae?

Cedar naturally contains oils and tannins that inhibit algae and fungal growth, making it highly resistant without chemical treatments. Its aromatic properties also deter pests. However, cedar may weather to a silvery-gray over time, requiring occasional sealing to maintain its algae-fighting properties.

Teak, known for its high natural oil content, offers excellent water resistance and slows algae formation. Its tight grain structure further reduces moisture retention, a primary cause of algae. While teak is more expensive, it often outperforms cedar in long-term algae resistance with minimal upkeep.

For budget-conscious gardeners, cedar provides strong algae resistance at a lower cost. If longevity and minimal maintenance are priorities, teak is the superior choice. Regular cleaning and proper drainage will enhance algae resistance for both materials.

Ultimately, both woods resist algae better than non-wood alternatives, with teak having a slight edge in performance and cedar offering better affordability. Your choice depends on climate, budget, and desired maintenance level.