When Do Gardenia Bloom?

When Does Gardenia Bloom

When Does Gardenia Bloom? The most commonly grown species of this shrub bloom in summer. Some species bloom in the spring season and continue blooming into fall.

What are gardenias?

Gardenias are sub-tropical shrubs. They bear a stunning and expressive white flower that smells nice. Most gardenia species are native to tropical regions around the world.

They do well when grown outdoors in a place with hot humid temperatures e.g. Jacksonville, Houston, Orlando, and New Orleans. If you live in a place with low humidity (anywhere in the north of the USA), you should grow them indoors and place a plant humidifier next to them to make sure they get enough moisture to thrive. You should also make sure the temperature around them does not get too cold. 

Gardenias are not the easiest flowers/plants to grow. However, they are very rewarding to grow because of the stunning flowers they produce and how nice they smell.

How to grow gardenias

As mentioned above, gardenias are not the easiest plants to grow. However, by following the steps below, you can grow gardenias successfully. 

  1. Find a site with a light shade or the full sun. Gardenias can grow well in the full sun. However, in places where the sun is often too hot, the sun can cause burns on their leaves and affect them negatively. Therefore, they should be grown under a light shade in such places. The best site to grow them indoors is next to a big window that ensures they get at least 6 hours of sunlight throughout the day. If you cannot find such a site or the sun does not shine a lot in your region, you should get an LED grow light bulb to give your gardenias the energy they need.
  2. Use well-drained soil. Gardenias need to be watered just once every week. This shows that they do not need a lot of water around their roots to survive. Therefore, they should be planted in soil that is well-drained to ensure water does not stick around their roots. There are plenty of well-drained planting soil products available on Amazon. Buy one for your gardenias. While gardenias do not need a lot of water around their roots, the soil needs to be moist but not soggy. So when panting gardenias, you should add a bit of organic mulch to keep the soil moist.
  3. Make the soil slightly acidic. Gardenias thrive in soil with a pH of between 5 and 6. Therefore, make sure the planting or gardening soil you buy has a slightly acidic pH. Or get something to make the soil acidic e.g. sphagnum peat or an acidic fertilizer. Because gardenias like acidic soil, you should not grow them next to concrete walls because such walls are known to make the soil around them alkaline.
  4. Make the soil nutrient-rich. Like most plants, gardenias thrive in soils that are rich in nutrients. Therefore, you should buy nutrient-rich gardening soil or make the soil you want to use nutrient-rich. To make soil nutrient-rich, you should add organic matter such as manure, peat moss, or compost. Alternatively, you can add fertilizer to make the soil nutrient-rich.
  5. Maintain high humidity around them. Gardenias grow rapidly and look their best in hot and humid temperatures. By planting them in a site where they are exposed to the sun for several hours a day, they just need high-humidity to thrive. It is up to you to provide this condition. If you’ve planted your gardenias outside, you can provide high-humidity by spraying them with a mist of water when the temperatures are high. If you’ve planted them indoors, you can provide high-humidity by setting a plant humidifier next to them.
  6. Fertilize every four weeks. For gardenias to thrive, they need nutrients. You should fertilize them every four weeks between March and October using a balanced or slightly acidic fertilizer. 
  7. Deal with pests early. Gardenias are frequently attacked by mealybugs and whiteflies. You should deal with such pests quickly and early using an insecticidal soap or horticultural oil.

How to make your gardenias produce blooms

In this section, you will learn tips on how to make your gardenias produce the best and most fragrant blooms regardless of the species you’ve decided to grow. 

  1. Feed your gardenias. Gardenias need plenty of nutrients to produce beautiful and fragrant flowers. Therefore, you should feed them with the nutrients they need if you want them to thrive. The best way to feed them is to fertilize them either monthly or biweekly with an acidic fertilizer such as camellia or azalea fertilizer. The fertilizer will deliver the nutrients and maintain the low pH the plants need to thrive.
  2. Water your gardenias regularly. Gardenias need a lot of water to grow and survive. They also need water to develop flowers. So to ensure they have enough water, you should water them regularly. However, you should try not to overwater them as this can cause root rot and their death. So do not let the soil around their roots to dry or to become soggy. Aim for somewhere in between through weekly watering or by using the finger test to determine when your gardenias need watering.
  3. Aim for timely pruning. Pruning should be done at the right time to avoid cutting flower buds for the next blossoms. The best time to prune gardenias is in early summer when they finish blooming. The pruning should be limited to eliminating old and crooked branches to ensure plant energy is not wasted on them. If you have not pruned your gardenias by mid-summer, you should let them be.
  4. Fight bud drop. Gardenias usually drop their developing flower buds. Unfortunately, this often happens just before the blooming season. The bud drop is often caused by under-watering, overwatering, or low humidity. Therefore, to prevent bud drop, you should ensure regular irrigation using enough water to maintain soil moisture content. You should also use a mulch to help maintain soil moisture content. Insufficient light can also be a cause of bud drop. So ensure your gardenias get enough sunlight or get a grow light.

The final word

If you take into account all the tips given in this post, your gardenias will grow and bloom on time. If you do not take everything into account, your gardenias will likely struggle. They probably won’t bloom or produce fragrant blossoms. So grow your gardenias right and give them the ideal conditions if you want to witness glossy green leaves, stunning white flowers, and a divine fragrance.