Why do my strawberries have a slightly bitter taste?

Question:

Why do my strawberries have a slightly bitter taste?

Answer:

The flavor of most fruits and vegetables is influenced by weather conditions.  In regards to strawberries, warm sunny weather produces the most flavorful fruit.  When the weather is extremely hot, the berries may have a slightly bitter taste.  Strawberry plants produce smaller quantities of sugars when the weather is cool and cloudy.  As a result, berries are not as sweet when the weather is cool and rainy in May and June. 

Leather rot, caused by a fungal disease, can be a problem in wet weather.  Infected fruit have a leathery texture and bitter taste.