Water chrysanthemum

Veronica undulata

Veronica undulata is a relatively easy-to-care-for perennial plant native primarily to the temperate and subarctic regions of Asia. The plant's main growth characteristics, propagation methods, cultivation methods, garden uses, and major pests and diseases and control methods can be described as follows:

Growth Characteristics
- Environment: It thrives in sunny locations or partial shade.
- Soil: It prefers well-drained soil, and soils with a slightly acidic or neutral pH are suitable.
- Water: It requires a general level of moisture, but a continuously wet environment should be avoided.

Propagation Methods
- Seeds: It can be propagated by sowing in spring or autumn. Plant seeds at a shallow depth and maintain adequate moisture until germination.
- Cuttings: It can be propagated by breaking off stems in the summer and planting them in soil mixed with sand.

Cultivation Methods
 - Location Selection: Grow in a location with adequate sunlight or bright partial shade. 2. Soil Preparation: Mix organic matter thoroughly into well-draining soil.
 - Planting Time: Planting in early spring or late autumn is recommended.
 - Care: Promote healthy growth through proper watering and periodic weed removal.
 - Fertilization: Supply a balanced fertilizer according to the schedule during the growing season.

Uses in the Garden
- Watercress thrives in shady gardens and, as it grows as a vining plant, is suitable for decorating flowerbed edges or as a border plant.
- The long blooms add volume and pair well with other perennial plants.

Important Pests and Control Methods
- Aphids: Since they can damage new shoots and stems, wash them off with soapy water or control them naturally using natural predators.
- Soft Rot: This can occur in poorly drained environments, so prevent it by improving soil drainage.
- Fungal Diseases: This can occur in overly humid environments; if disease occurs, remove the infected parts and improve ventilation. Based on this information, you can effectively cultivate and manage Undulata.

Plant Type
Plant Family	Scrophulariaceae
Height	30∼50cm
Spread
Colors	white, purple
Bloom Period	August
Water Needs	commonly
Exposure	Sunny
Freezing Resistance	-10°C

Veronica persica
Veronica arvensis

Shield flower
Veronica serpyllifolia subsp. humifusa