Rosemary Bonsai Tree Care Sheet

General Description:

The Rosemary Bonsai Tree from our wholesale nursery is native is the Mediterranean, and is famous for the soothing pine fragrance that tree constantly emits. The Latin name for the Rosemary actually translates to “mist of the sea,” since it is believed that the greenish grey foliage resembles a light mist up against the tower sea cliffs of the Mediterranean. This evergreen tree will produce delicate, yet vibrant blue flowers that will continue to bloom year after year during the spring and summer. An interesting facet about the Rosemary Bonsai is that when young, the tree will actually shed its fibrous bark for a rather odd effect that is not found in many bonsai trees. It is best to keep this tree outside in full sun, but it is possible to raise this tasty herb inside if given proper lighting and adequate air circulation. Many people use this attractive tree to help with seasoning of Mediterranean traditional cuisine. Please be sure you check out our full selection of online bonsai trees for sale after you have read up on the Rosemary Bonsai Tree.


These amazing bonsai trees are not drought tolerant, so you will need to monitor the tree closely during the summer when temperatures are high. They will do best in slightly moist soil, but need to be allowed to light dry in between waterings. Check the soil by pressing lightly with your fingers to check for moisture. When the soil feels dry, it is time to thoroughly water! Be careful not to water too much, known as overwatering, because this can lead to root rot and lots of health problems. Again, pay close attention to the soil and water properly during the summer!


The Rosemary Bonsai Tree well grow best when kept outside in a warm, humid environment. When temperatures begin to dip below freezing during the winter, you should move the tree inside your house or garage to offer frost protection for the roots. When the weather warms back up and the danger of frost is gone, we recommend that you return the tree back outside.


If kept indoors, they still need to be provided with 6-8 hours of natural sunlight and misted often to help create a humid environment around the tree. When kept outside, place in a location where it will receive as much sunlight as possible. The more the better for this little guy!


We recommend that you fertilize your Rosemary once a month from spring to fall with fish emulsion. Fertilizing the tree during growing season will help replace the lost nutrient in the small amount of soil and keep the tree strong and healthy.


While the Rosemary Bonsai Tree is in fact a bonsai, you need to keep in mind that it is actually an herb that is just being used in bonsai. Herbs respond well to periodic trims, and then you can use the trimmings for additional flavors in the kitchen! When you trim a Rosemary, you should follow the general rule of thumb which is to not cut off more than 1/3 of the foliage at any one time. Focus on making your cuts just above the leaf joints and shape to your heart’s content. If you choose to wire the tree to help shape it, the Rosemary Bonsai is usually wired in the cascade style, which extenuates the natural “windswept look” it would have in the Mediterranean.


We recommend that you repot your Rosemary each year in the spring. Each time you repot, you should trim a significant amount off the root ball to create more room for new roots to grow in the new soil. You should wait at least one month before using fertilizer or doing further pruning to allow the tree time to recover.

Potential Pests:

If you choose to keep your Rosemary indoors, you might run into mildew – which is usually due to overwatering and not enough air circulation. To counter this problem, try blowing a fan in the direction of the bonsai to help create air circulation. You might also encounter spider mites or aphids. These can usually be removed by mixing a solution of 1 tsp dish soap and 1 quart warm water and thoroughly cleaning the tree. Be sure to rinse the tree with clean water when finished and continue to inspect the tree in the days to come!

Helpful Comments:

Rosemary is an excellent seasoning for breads, butters, soups, and stews. Please click if you would like to learn about ways to incorporate Rosemary into your cooking and learn about the health benefits of doing so. Either way, it is worth putting in the effort to keep this tree healthy for its many pleasing attributes!


*Please click to view all of our bonsai tree care sheets!