How to Grow Four O’Clock Plants at Home?

How to Grow Four O'Clock Plants
12 min reading time

If you’re looking for an easy-to-grow plant that provides vibrant and fragrant blooms, look no further than the four o’clock plant. With a little care and attention, you can cultivate these beautiful flowers right in your home garden.

In this comprehensive guide, we’ll take you through the step-by-step process on how to grow four o’clock plants, from planting the seeds to troubleshooting any issues you may encounter along the way. You’ll learn about the ideal soil and light conditions for your plants, how to prune them to encourage bushier growth, and the best fertilizers to use for optimal results.

So, whether you’re a seasoned gardener or just starting out, this guide will provide you with all the information you need to care for your four o’clock plants and enjoy their stunning blooms all season long. Let’s get started!

Planting Four O’Clock Seeds

Before you start growing four o’clock plants, it’s important to know how to plant their seeds properly. Follow these simple steps to get started:

When to Plant Four O’Clock Seeds

The best time to plant four o’clock seeds is in the spring, after the last frost has passed. You can also start them indoors about four to six weeks before the last frost in your area.

How to Plant Four O’Clock Seeds

Plant four o’clock seeds about 1/4 inch deep in well-draining soil. Water gently after planting, taking care not to disturb the seeds. To help with germination, you can soak the seeds in water overnight before planting.

Growing Tips for Four O’Clock Plants

After planting, keep the soil moist but not waterlogged. Four o’clock plants prefer full sun to partial shade and can grow up to 2-3 feet tall. Consider spacing your plants about 12-18 inches apart to allow for proper growth and airflow.

Follow these tips and you’ll be on your way to growing healthy and beautiful four o’clock plants.

Soil and Light Requirements for Four O’Clock Plants

Four o’clock plants thrive in soils that are well-draining, loose, and fertile. It’s important to ensure that the soil is not waterlogged and that there is proper aeration around the roots.

Before planting, amend the soil with organic matter, such as compost or well-rotted manure, to ensure that the soil is rich in nutrients. Four o’clock plants prefer a soil pH of 6.0 to 7.5. A pH testing kit can help you determine the acidity of your soil and whether you need to adjust it.

When it comes to light requirements, four o’clock plants grow best in full sun to partial shade. They require at least six hours of direct sunlight daily to promote healthy growth and blooming. However, in hotter climates, they benefit from some afternoon shade to protect them from intense heat and sunburn.

How to Grow Four O’Clock Plants: Watering and Fertilizing

Four o’clock plants require regular watering to keep the soil moist but not waterlogged. Water deeply once a week, or more frequently in hot and dry weather conditions. Avoid overhead watering, as the leaves and flowers may be sensitive to moisture and susceptible to fungal diseases.

Applying a balanced, slow-release fertilizer every four to six weeks during the growing season can help promote healthy growth and blooming. Alternatively, you can use a water-soluble fertilizer every two weeks to provide the necessary nutrients.

Pruning Four O’Clock Plants

Pruning is an essential part of maintaining the shape and health of your four o’clock plants. It helps to promote bushier growth, control the size of the plant, and increase flower production. Below are the best practices for pruning your four o’clock plants:

  • Prune your plants in the late spring or early summer when they are actively growing. Avoid pruning during winter or fall, as it may damage the plant or reduce the number of blooms.
  • Use a pair of sharp, clean pruning shears to cut back any dead, damaged, or diseased branches. Make a clean cut just above the node or lateral bud to encourage new growth.
  • Pinch back the tips of the stems to promote branching and more compact growth. This step is especially important if your plants grow tall and leggy.
  • Remove any crossing or rubbing branches that may cause damage or create a crowded appearance. This will improve air circulation and prevent diseases from spreading.
  • If you want to shape your plants for a particular purpose, such as a hedge or a topiary, use pruning shears or hedge trimmers to achieve the desired results.

By following these pruning tips, you can keep your four o’clock plants healthy and attractive throughout the growing season. Happy gardening!

Troubleshooting Four O’Clock Plant Problems

Four o’clock plants are generally easy to care for, but they can still be susceptible to problems that may affect their growth and flowering. Here are some common issues you may encounter and how to fix them:

Yellowing Leaves

If your four o’clock plant’s leaves are turning yellow, it may be a sign of overwatering. Make sure the soil is well-draining and allow it to dry out slightly before watering again. Alternatively, yellowing leaves could indicate a lack of nutrients. Try fertilizing your plant with a balanced fertilizer.

No Blooms

If your four o’clock plant is not producing any blooms, it may not be getting enough sunlight. These plants require at least 6 hours of direct sunlight per day. If your plant is not receiving enough sun, move it to a sunnier location. Another possibility is that your plant is getting too much nitrogen, which can cause an abundance of leaves but no blooms. Try using a fertilizer with a lower nitrogen content.

Fungal Diseases

Fungal diseases such as powdery mildew and leaf spot can affect four o’clock plants. To prevent these diseases, make sure your plant has good air circulation and avoid overhead watering. If your plant does get a fungal disease, remove any infected leaves and treat with a fungicide according to the instructions on the label.

Spider Mites

Spider mites are common pests that can infest four o’clock plants. These tiny creatures can cause yellowing leaves and webbing on the plant. To get rid of spider mites, wash the plant with a strong jet of water or treat with insecticidal soap or neem oil.

By addressing any issues promptly and taking proper care of your four o’clock plants, you can enjoy the beauty and fragrance of these lovely flowers all season long.

Four O’Clock Plant Propagation

Propagating four o’clock plants is a great way to multiply your existing plants and expand your garden collection. There are different methods of propagation, including stem cuttings, division, and seed propagation.

Propagation by Stem Cuttings

Propagating four o’clock plants by stem cuttings is an easy and effective method. Select a stem that is healthy and free of pests or diseases, and cut a 4-6 inch piece from the tip of the stem. Remove the leaves from the bottom half of the cutting, leaving only one or two pairs of leaves. Dip the cut end of the stem in rooting hormone, and plant it in a pot filled with moist potting soil. Keep the soil moist and out of direct sunlight until your cutting roots and begins to grow.

Propagation by Division

Dividing four o’clock plants is another simple propagation method that works well for mature plants. Dig up the plant and separate the root ball into smaller sections, ensuring that each section has at least one stem and a healthy root system. Replant each section in a pot or an outdoor garden bed, and keep the soil moist until the plants establish themselves and begin to grow.

Propagation by Seeds

Four o’clock plants can also be propagated by seeds, although this method requires some patience. Collect the seeds from the plant after the flowers have faded, and store them in a cool and dry place until you are ready to plant them. Plant the seeds in a well-draining potting soil, and cover them with a thin layer of soil. Keep the soil moist and the pot in a warm and sunny location. Germination can take one to two weeks, and the young plants should be transplanted once they are large enough to handle.

By using these propagation techniques, you can easily grow more four o’clock plants to add to your garden or share with others. Remember to follow the care instructions and use the proper soil and light requirements to ensure successful growth.

Best Fertilizers for Four O’Clock Plants

How to Grow Four O'Clock Plants

If you want your four o’clock plants to thrive and produce abundant blooms, providing them with the right nutrients is essential. Here are some of the best fertilizers you can use:

Fertilizer TypeApplicationBenefits
CompostApply a 1-inch layer around the base of the plants– Improves soil structure
– Provides organic matter for plant growth
Slow-release fertilizerApply according to package instructions– Feeds the plants gradually over time
– Reduces the risk of over-fertilization
Fish emulsionDilute with water according to package instructions and apply to the base of plants– Provides macro and micronutrients essential for plant growth
– Increases soil fertility

It’s essential to fertilize your four o’clock plants once a month during the growing season. Avoid applying too much fertilizer as it can burn the plants and reduce blooms. Always follow package instructions and adjust the application based on your plants’ needs.

Remember to water your plants after fertilizing to prevent nutrient burn and encourage uptake.

Common Pests and Diseases of Four O’Clock Plants

Despite their hardiness, four o’clock plants are prone to certain pests and diseases that can compromise their growth and flowering. Knowing how to identify and address these issues promptly is crucial to ensure healthy and thriving plants. Here are some of the most common pests and diseases of four o’clock plants:

1. Spider Mites

These tiny arachnids can infest four o’clock plants, causing yellowing leaves, tiny webs, and stunted growth. Spider mites thrive in hot and dry conditions and can spread rapidly throughout the foliage. To control spider mites, keep the plants well-watered and misted, and spray them with a solution of insecticidal soap or neem oil.

2. Japanese Beetles

These metallic green beetles can feed on the leaves, flowers, and buds of four o’clock plants, causing severe damage and defoliation. They tend to be more active during the summer months and can be controlled with handpicking or spraying with insecticides containing carbaryl or pyrethrin.

3. Powdery Mildew

This fungal disease can affect the leaves and stems of four o’clock plants, producing a powdery white coating that reduces photosynthesis and weakens the plant’s immunity. Powdery mildew thrives in warm and humid environments and can be prevented by providing good air circulation and reducing leaf wetness. If the disease appears, remove the affected parts and spray the plant with a fungicide containing copper or sulfur.

4. Root Rot

This soil-borne disease can affect four o’clock plants that grow in poorly drained or waterlogged soils, causing the roots to decay and the foliage to wilt and yellow. To prevent root rot, ensure that the soil is well-draining and that the plant is not overwatered. If the disease appears, treat the plant with a fungicide containing thiophanate-methyl or trifloxystrobin.

By keeping a watchful eye on your four o’clock plants and addressing any issues promptly, you can enjoy healthy, vibrant, and fragrant blooms throughout the growing season.


Congratulations on completing the easy guide on how to grow four o’clock plants! With the knowledge and tips gained from this article, you are well equipped to cultivate these vibrant and fragrant flowers in your own home garden.

Remember, the key to success is maintaining proper care and addressing any issues promptly. Ensure your four o’clock plants receive adequate sunlight, soil nutrients, and regular watering. Prune your plants regularly to encourage bushier growth and more abundant blooms.


How often should I water my four o’clock plants?

Four o’clock plants prefer moist soil, so it’s best to water them regularly, about once or twice a week. However, be sure not to overwater as they don’t tolerate soggy conditions.

Can I grow four o’clock plants in containers?

Absolutely! Four o’clock plants are well-suited for container gardening. Just make sure the containers have drainage holes and provide them with adequate sunlight and regular watering.

How long does it take for four o’clock seeds to germinate?

Four o’clock seeds typically take around 7 to 14 days to germinate. Keep the soil consistently moist during this period to promote successful germination.

Should I deadhead my four o’clock plants?

Deadheading, or removing spent blooms, can encourage your four o’clock plants to produce more flowers. However, if you want the plants to self-seed for future growth, you can leave the spent blooms on the plant.

Can I grow four o’clock plants indoors?

Four o’clock plants thrive in outdoor settings with ample sunlight. While they can be grown indoors, they may not reach their full potential without sufficient natural light. If growing indoors, place them near a sunny window or use supplemental grow lights.

How tall do four o’clock plants typically grow?

Four o’clock plants can grow up to 24 inches in height. However, the exact height may vary depending on the growing conditions and the particular variety of four o’clock plant.

Are four o’clock plants toxic to pets?

Yes, four o’clock plants contain toxic compounds that can be harmful to pets if ingested. It’s best to keep them out of reach or consider planting them in a pet-free area of your garden.

Do four o’clock plants attract pollinators?

Absolutely! Four o’clock plants are known to attract pollinators such as bees and hummingbirds. Their vibrant blooms and fragrance make them a favorite among these beneficial garden visitors.

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