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How to Grow Tweedia

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It is not common to find a plant that has blue flowers. However, it is more rare to find one with fragrant flowers and attractive foliage. Tweedia is a plant that has all three of these qualities, making it a popular choice in gardens, flower arrangements, container gardens and bridal bouquets.

Tweedia, which is a native to South America and best planted after the risk of frost has passed, should be planted in the spring. It is a great choice for gardens that include other late-blooming plants like lavender, sunflower and black-eyed Susan. Tweedia plants mature slowly and steadily, usually between 70-85 days after being planted.

Tweedia Care

Tweedia, a subshrub or tropical twining vine that is native to Brazil and Uruguay, is also known as the Tweedia. Tweedia is beloved for its delicate, sky-blue flowers. However, they can be easily damaged by strong wind or heavy rain. To ensure that your blooms remain beautiful throughout the entire blooming season, choose a protected spot in your garden where you can plant tweedia.

Tweedia is an easy plant to grow. It doesn’t require much attention. If given the right conditions, it can grow up to 3 feet in height. It is part of the milkweed family and attracts many types of pollinators. The plant is usually pest- and disease-free. However, you might encounter milkweed bugs at the tail end their season.


Tweedia grows best in full sun, particularly in areas with cooler summers. Tweedia will grow well in parts of the sun, especially in hot areas.


Tweedia is tolerant of a variety of soil types, even poor quality or nutrient-poor. To get the best results, plant your tweedia on moist, well-drained soils. Tweedia, like most plants, does not like wet feet or roots that are sitting in water. It is best to ensure the soil has good drainage. If drainage is a concern, you can add perlite or sand. The plant doesn’t require any special pH requirements and can thrive in all kinds of pH blends.


Regular watering is essential for Tweedia plants to thrive. Although older plants may be more resilient to drought than younger plants, they will still thrive if given regular watering. You will need to add water to your area to ensure that your tweedia grows. Averaging about an inch per week in most climates, this should be enough to provide sufficient rainfall.

Temperature and humidity

Tweedia loves heat and needs warm temperatures to remain green year round. Tweedia can be grown in most temperate climates either as an annual or as a houseplant that is overwintered indoors and then moved outdoors during the summer. You should wait for temperatures to reach 50 degrees Fahrenheit before you transplant seedlings or plant from seeds.


Tweedia plants shouldn’t be fertilized before they have established. Then, fertilization can be beneficial during the growing season to encourage new growth. You can encourage aggressive flowering in the fall and the summer by fertilizing your plants in the spring and summer. Most commonly, a standard all-purpose fertilizer suffices.

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Pruning Tweedia

Keep your tweedia plants full and bushy by pinching the stem tips in spring to encourage branching. Regular season-end pruning is a good idea in areas where tweedia can grow outdoors during the winter months. Tweedia can be cut back as with other shrubs. However, you should not prune more than one third of its branches at once.

Propagating Tweedia

Tweedia can easily be propagated from softwood stem cuttings. Take a 4 inch length stem cut from a mature “mother” tree to propagate tweedia. This is done in the early-to-late season. You should use a pruning shears or a sharp knife to cut the stem. The lower portion of the cutting should be removed, and at least two leaves must remain at the top. Then, make a new cut under the node nearest the bottom. Dip the cutting in a rootinghormone. Place the cutting in a rooting medium and water it. Then place it in bright, but not direct sunlight. The roots should start to grow in four to eight weeks.

Tweedia can easily be grown from seeds. You can either buy seeds or harvest seeds from an existing plant to grow the next season. Tweedia seeds may be planted in a variety of ways depending on the climate. Tweedia can be grown as an annual by starting seeds indoors in the late summer, and then overwintered until the next growing year. Or, you can plant the seeds directly into the garden after the last frost. Tweedia can be grown as a perennial. The seeds can be planted directly in the garden or can be started indoors. Once established, they can be moved outside. It is recommended to use heated seed mats for germinating Tweedia seeds. They do well when heated from below during germination.

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