What should I do if the petunia doesn’t bloom? How to make Verbena bloom all year round?

Reasons why Verbena does not bloom

If a plant does not flower, it means that the conditions for flowering have not been met. We should analyze from the perspective of plant growth requirements:

1. Is there enough light?

Verbena loves light. If there is not enough sunlight, the plant will not be supplied with enough nutrients and will grow weak. It certainly cannot provide the nutrients needed for flowering. The plant will also tend to grow too tall, and even if it blooms in time, the flowers will be sparse.

2. Insufficient fertilizer

Whether it is open field or potted, base fertilizer must be applied. During the growing season, fertilize once every half a month. Stop applying nitrogen fertilizer when the flowering period is approaching. Too much nitrogen fertilizer will result in lush leaves but few flowers, or even no flowers.

3. Excessive or insufficient water

Improper watering, too much water can easily cause root rot of the plant and affect flowering, while too little water will restrict plant growth and also affect flowering. During the growth period, the potting soil should be kept moist, and water should be sprayed around the plant frequently to maintain the air humidity. If the air humidity is not enough, it will affect the flowering of the plant. After the plant blooms, the remaining flowers should be cut off in time to extend the flowering period.

4. Temperature is not

Verbena likes warmth and has average cold resistance. It will stop blooming if the temperature is too low.

Maintenance methods for Verbena flowering in four seasons

1. Soil

Verbena is not very demanding on soil, but it can take root, grow healthily and bloom profusely in loose, fertile and relatively moist neutral soil.

2. Watering

Because the roots of petunias are shallow, you should pay attention to watering in summer to prevent drought. Too much or too little water during the maintenance period is not conducive to growth. Too much water will make the stems thin and elongated, and the amount of flowering will decrease; lack of water will cause the plants to grow poorly and bear fruit prematurely.

3. Sunlight

Verbena needs to be maintained under shade conditions in spring, summer and autumn. When the temperature is high, if it is placed in direct sunlight, the leaves will become significantly smaller, the internodes of the branches will shorten, the base leaves will turn yellow and fall off, and the growth will be very slow or enter a semi-dormant state.

4. Temperature

Verbena prefers warm climate and avoids extreme heat. It will grow poorly when the temperature is higher than 34℃ in summer. It is not frost-resistant and will go dormant or die when the temperature is below 4℃ in winter. The most suitable growth temperature is 15-25℃. It is usually sown in autumn and winter to avoid the high temperatures in summer.

5. Fertilization

Like other herbaceous flowers, petunia has high requirements for fertilizer and water, but it is required to follow the fertilization (water) principle of "light fertilizer, frequent application, small amount and frequent application, and complete nutrition", and after fertilizing, the leaves and flowers should be kept dry at night.

6. Pruning

Verbena is generally pinched twice before flowering to encourage the growth of more flowering branches.