What is the Difference Between Zonal and Seed Geraniums?

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The main difference between zonal and seed geraniums lies in their propagation methods and growth characteristics. Here are the key differences between the two:

  1. Propagation: Zonal geraniums are propagated through cuttings, while seed geraniums are propagated through seeds.
  2. Growth Rate and Flowering: Zonal geraniums are faster to grow and flower compared to seed geraniums.
  3. Size and Shape: Zonal geraniums are typically taller and have larger flowers than seed geraniums. Seed geraniums usually have a more compact shape and grow about a foot tall and wide, with 3- to 4-inch flower heads. In contrast, zonal geraniums can have flower heads up to 6 inches across and grow more upright, reaching up to 18 inches tall.
  4. Cold Tolerance: Seed geraniums may have different cold tolerances compared to zonal geraniums.
  5. Bloom Shedding: Seed geraniums naturally shed old blooms, while zonal geraniums need to be manually de-headed to maintain their appearance.

Both zonal and seed geraniums belong to the genus Pelargonium and are closely related, but they have contrasting characteristics in terms of size, shape, growth rate, and preferred temperature. Your choice between the two types may depend on factors such as growth rate, size, and cold tolerance.

Comparative Table: Zonal vs Seed Geraniums

Zonal and seed geraniums are two types of flowering plants belonging to the genus Pelargonium. The main differences between them are their propagation methods, growth rates, sizes, and costs. Here is a comparison table highlighting the differences between zonal and seed geraniums:

Characteristic Zonal Geraniums Seed Geraniums
Propagation Method Propagated through cuttings Propagated through seeds
Cost More expensive Less expensive
Size Larger, reaching up to 24 inches tall Smaller, reaching up to 15 inches tall
Growth Rate Faster growth rate Slower growth rate compared to zonal geraniums
Lifespan Can live up to 1.5 years Annual plants, lasting no more than a year

Zonal geraniums are propagated through the cutting of other plants, resulting in genetically identical plants. They have larger, showy flowers and a more compact growth habit. On the other hand, seed geraniums are propagated through seeds, resulting in plants with smaller flowers and a more spread-out growth habit. Zonal geraniums are generally more expensive than seed geraniums, but they grow faster and larger.