Maple leaf pigweed

Ambrosia trifida

Ambrosia trifida

Growth Characteristics:

Ambrosia trifida is an annual herbaceous plant native to North America that thrives primarily in moist soil. It grows to a height of 1.5 to 4 meters, and its leaves are large, palm-shaped, with 3 to 5 deep lobes. It flowers between summer and autumn, with small yellowish-green flowers forming spike inflorescences.

Propagation Method:

It is primarily propagated by seeds. The seeds mature between summer and autumn and germinate the following year after falling to the ground. It has a very strong reproductive capacity, capable of producing a large quantity of seeds at once.

Cultivation Method:

Since Ambrosia trifida grows naturally in the wild, no special cultivation methods are required. However, if you wish to cultivate it in a garden, well-drained soil and a location with ample sunlight are ideal. When sowing seeds, plant them at appropriate intervals.

Use in Gardens:

In gardens, it is not primarily used for landscaping purposes; rather, due to its tendency to spread easily, it is often treated as a weed. Caution is required as it may cause allergies.

Major Pests and Control Methods:

While ragweed generally does not have specific pests, it can compete with nearby crops or other plants, hindering their growth. The most effective control method is to remove it as a weed from the early stages. Pulling it up by the roots or using appropriate herbicides if necessary are also effective methods.

Overall, since ragweed can have a negative impact on the surrounding ecosystem, it is advisable to avoid cultivating it in general gardens whenever possible.

Plant Family	Asteraceae
Height	1~2.5m
Colors	green
Bloom Period	July to September
Water Needs	commonly
Exposure	Sunny
Freezing Resistance	-30°C

Ragweed
Ambrosia artemisiifolia

Duck-leafed ginseng
Amelanchier alnifolia