Plants that start with o have beautiful leaves and dazzling flowers, so there’s no reason why they should not be in your garden.

7 Plants That Start With O

In a well-organized garden, these plants will steal the show and attract every eye to your garden – think of oriental lilies and onions.

Read this article to learn the best ones that you can grow as well as some cool tips to grow them.

A List of Plants That Start With O

1. Obedient Plant

Obedient Plant

Plant Specifications
  • Height: 3-4 feet
  • Width: 3-4 feet
Colors
  • Leaf color: Green
  • Flower color: Pink, white, or purple
Care Requirements
  • USDA hardiness zone: 3-9
  • Light: Full sun
  • Water: Regular watering
Common Pests
  • No serious pests
  • Fungi and bacteria

Here’s a pretty plant that you’d love. The physostegia virginiana of the Lamiaceae family is called obedient because when you push or turn the flowers, they remain bent or turned and stay in that position for some moments before they return to their original position. This means that when you grow these obedient flowers, you can give your yard a different look whenever you want.

Would you like to grow this plant that is very obedient to you? This is one of the easiest plants that you can grow. They need regular watering though they are drought-tolerant. They need occasional feeding though they can live in poor soil without losing their flowers or beauty. However, make sure that they get at least five hours of daily sunlight.

2. Oriental Lily

Oriental Lily

Plant Specifications
  • Size: 2-8 feet tall
  • Width: 6-8 inches wide blooms
Colors
  • Leaf color: Green
  • Flower color: Purple, white, red, or pink
Care Requirements
  • USDA hardiness zone: 6-9
  • Light: Full sun
  • Water: Regular watering
Common Pests
  • Aphids
  • Mealybugs

Looking at this beautiful work of art, you’d truly appreciate nature. This lily which is popularly referred to as the Stargazer lily has very beautiful red, pink, and white flowers. It is an easy-growing perennial plant, so you can expect it to come back yearly without you planting extra seeds.

The beautiful plant makes a great companion for the orange daylily and zephyr lily plants (there are many peace lily varieties to choose from!). Even though these lilies are exceptionally beautiful, they are very easy to care for. You just need to grow them in full sun.

If you are growing the lilies indoors and do not have access to six hours of direct sunlight, grow them in a bright room. Remember to use a general-purpose houseplant fertilizer for the lilies, especially when they’re in bloom in summer.

3. Oriental Poppy

Oriental Poppy

Plant Specifications
  • Height: 2-3 feet
  • Width: 2-3 feet
Colors
  • Leaf color: Green
  • Flower color: Orange, white and red
Care Requirements
  • USDA hardiness zone: 3-7
  • Light: Full sun
  • Water: 1 inch per week
Common Pests
  • No serious pests
  • Fungi and bacteria

Just take a look at this work of art. This poppy is too beautiful not to be in your yard, so if you are looking for perennial plants beginning with o to add to your collection, you should add this plant. The oriental plant has dazzling flowers with multiple colors that will stun both you and your visitors. You can grow it close to your zebra-plant pots for extra beauty.

Taking care of poppy plants is very easy. They need occasional fertilizer with phosphorus and potassium-rich fertilizers. They also need fast-draining soil, especially when they’re in bloom so that water stress does not make them lose their flowers. Also, ensure that they get six to eight hours of sunlight daily.

4. Ornamental Onion

Ornamental Onion

Plant Specifications
  • Height: 1-4 feet
  • Width: 3-10 inches
Colors
  • Leaf color: Green
  • Flower color: Lilac-purple
Care Requirements
  • USDA hardiness zone: 4-10
  • Light: Partial to full sun
  • Water: Well-drained soil, consistent watering
Common Pests
  • No serious pests
  • Fungi and bacteria

Onions make people cry, but not this one. People who are not aware that there are onion plants grown specifically for ornamental purposes will be very surprised when they find out that the beauty in your yard is an onion.

While you can grow this beauty alone, it makes a good companion plant for zinnia or oyster plants, as they complement each other’s beauties. You need to be very intentional about the soil or potting mix, as any stress caused by the substrate can kill your onions.

Make sure that while the substrate retains moisture, the moisture is not in excess. You can achieve this by mixing perlite for drainage and vermiculite for retention in the soil. Your onions can tolerate a wide range of light exposure.

5. Oxeye Daisy

Oxeye Daisy

Plant Specifications
  • Height: 2 feet
  • Width: Up to 3 feet
Colors
  • Leaf color: Dark green
  • Flower color: White petals and yellow centers
Care Requirements
  • USDA hardiness zone: 3-8
  • Light: Full sun
  • Water: Regular watering
Common Pests
  • Mammals
  • Few insect pests

Looking for white flowers that start with o? Here’s the perfect plant for you. Daisies are popular flowers that you can grow with ease. These beauties make beautiful cut flowers, so you can give them to people that you love and care about.

If you are looking for house plants that start with o, oxeyes are suitable as well. You just need to make sure that they get full sun. You can achieve this by keeping their pot very close to the window so that the daisies can get afternoon soon. Remember to water them regularly. When watering them, mist their leaves and flowers so that they can stay fresh.

6. Ohio Spiderwort

Ohio Spiderwort

Plant Specifications
  • Height: 2-4 feet
  • Width: 2 feet
Colors
  • Leaf color: Blue-green
  • Flower color: Bright blue
Care Requirements
  • USDA hardiness zone: 3-9
  • Light: Full to partial shade
  • Water: Medium watering
Common Pests
  • Scale insects
  • Leaf blight

If you are a fan of grasses, why not plant this grass with edible flowers? The beautiful plant can grow up to 4 feet in height, though it is more beautiful when below 2 feet. In mid-spring to summer, expect your yard to look purple or blue, as the spiderworts will fill the entire surface with their beautiful flowers.

These plants can tolerate a wide range of light exposure, so you can grow them in full to partial shade.

You want to water them every three to four days and feed them every month or two so that they can grow without problems. They sometimes grow out of control, so remember to put their growth in check by regularly pruning overgrown plants.

7. Oregon Grape

Oregon Grape

Plant Specifications
  • Height: 3-10 feet
  • Width: 2-5 feet
Colors
  • Leaf color: Bronze to light green
  • Flower color: Bright yellow
Care Requirements
  • USDA hardiness zone: 5-9
  • Light: Partial sun
  • Water: Somewhat dry soil
Common Pests
  • Whiteflies
  • Aphids
  • Scales

Are you looking for shrubs beginning with o? This grape is a good plant for you. The beautiful grape shrub is a North American native, so you can grow it in many parts of the United States. While it attracts a lot of views with its brightly colored flowers, it also produces edible fruits.

The fruits are seedy and sour, but they surely are pleasurableThe optimal environment for your grapes is a spot with full sun though the plants can also do well in partial sun.

Also, you have to wait until the soil is almost dry before you water the plants. You can achieve this by waiting three to four days before you water your plants. If your grapes have stunted growth or their flowers are falling, feed them. Remember to feed them regularly.

Conclusion

These plants beginning with o are truly lovely and should be in your garden.

Before you start planting, remember the following:

  • Oriental lilies and poppies, are beautiful plants starting with o that you can grow.
  • Other lovely plants to beautify your garden are onions, oxeyes, and grapes.
  • Ensure that when your plants are in bloom, they have full sun and access to regular feeding so that they can produce very bright and beautiful flowers.
  • You should not grow any plant that is not hardy in your USDA hardiness zone so that you do not face problems when growing it.

Excellent reminders, right? It is time to start planting. Check out the most popular plants that start with “Q”.

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