Whittier Fertilizer Blog

Growing Herbs in Warm Climates

Southern California has the perfect weather for growing herbs. Because it falls in zone 9 and 10 on the USDA Plant Hardiness Zone Map, the climate is idea for plant growth because most herbs thrive when they have plenty of sunlight. Most herbs need six to eight hours of direct sunlight, both in the morning and early evening. However, when the temperatures reach ninety degrees and above, the amount of sunlight can be reduced to about four hours in the morning. Also, you might want to provide some artificial shade as temperatures rise.


The soil is also important when it comes to growing herbs. Herbs produce essential oils and the production of these oils can be drastically affected by the soil. Herbs like slightly moist but most importantly well-drained soil. Too much water and herbs tend to rot.

Much of the natural soil in zone 9 and zone 10 is sandy. Because of the sandy nature of the soil, natural fertilizers like manure should be used as a supplement.


To prepare your soil. place about a 2-3 inch layer of manure or compost over the top of the sandy bare soil. Using a shovel or trowel, dig it in about 5-6 inches, mixing well. In addition, a layer of peat moss will help keep the ph of the soil down and also aid in water and nutrient retention.


How well air is circulated around your herb plants is also very important. How closely the herbs are planted to each other, will make a difference in how well your herbs grow. Beware of how closely you plant certain herbs. Some herbs do not mind being planted closely next to each other. Other herbs will need more space, in order to spread out.


Herbs, such as sage, mint, marjoram, oregano or rosemary, need a little extra room to spread. With these herbs, you should allow for at least 3 feet between each plant. Other herbs like parsley, chives, and cilantro, don’t mind being planted closely together and can get by in a relatively small space. When planting your herb garden, keep in mind that some herbs, like mint or lemon balm, should be planted in containers to protect against their invasive nature.


Growing your own herbs can be a fun and relaxing experience. There is nothing better than using your very own home-grown herbs in the preparation of your food. If you live in a climate such as southern California, you have a unique opportunity to do just that. Take advantage of this and have some fun growing your own herbs.

Posted in: Gardening, Landscaping

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