North America Non-native Plant

Spiraea Japonica Var. Bullata

Botanical name: Spiraea japonica var. bullata

USDA symbol: SPJAB

Native status: Not native but doesn't reproduce and persist in the wild

Synonyms: Spiraea bullata Maxim. (SPBU3)   

Spiraea japonica var. bullata: A Mysterious Garden Variety Worth Knowing About If you’ve stumbled across the name Spiraea japonica var. bullata in your plant research, you’re likely encountering one of the more elusive members of the spirea family. This particular variety is something of a botanical puzzle piece – recognized ...

Spiraea japonica var. bullata: A Mysterious Garden Variety Worth Knowing About

If you’ve stumbled across the name Spiraea japonica var. bullata in your plant research, you’re likely encountering one of the more elusive members of the spirea family. This particular variety is something of a botanical puzzle piece – recognized in scientific literature but rarely seen in typical garden settings.

What’s in a Name?

Spiraea japonica var. bullata goes by the scientific synonym Spiraea bullata Maxim., but unfortunately, this plant doesn’t seem to have earned itself a widely recognized common name. Sometimes the most interesting plants are the ones that fly under the radar!

Where Does It Come From?

Like its parent species, this variety traces its roots back to East Asia, though specific distribution details for var. bullata remain unclear in available botanical records. The broader Spiraea japonica species hails from Japan, China, and Korea, so we can reasonably assume this variety shares similar geographic origins.

The Garden Reality Check

Here’s where things get interesting (and a bit frustrating for plant enthusiasts): Spiraea japonica var. bullata appears to be either extremely rare in cultivation or possibly even lost to modern horticulture. While it exists in botanical literature, finding specific growing information, availability, or even detailed descriptions proves challenging.

Should You Try to Grow It?

Given the lack of available information and apparent rarity, this isn’t a plant you’re likely to find at your local nursery. If you’re specifically interested in spireas, you might want to consider these more readily available and well-documented alternatives:

  • Regular Spiraea japonica varieties that are widely cultivated
  • Native spirea species appropriate for your region
  • Other members of the Spiraea genus with proven garden performance

The Bottom Line

Spiraea japonica var. bullata represents one of those botanical mysteries that reminds us how much we still don’t know about the plant world. While it may not be the practical choice for your garden, its existence highlights the incredible diversity within plant families and the importance of botanical documentation.

If you’re passionate about rare plants and happen to encounter this variety through specialized botanical sources, approach it as you would any rare plant – with careful research, responsible sourcing, and realistic expectations about its garden performance.

A Word of Advice

When plant information is this scarce, it’s often better to focus your gardening energy on species with proven track records and available growing guidance. There are plenty of wonderful, well-documented spirea varieties that will reward your efforts with reliable beauty and known growing requirements.

Sometimes the most honest thing a gardening expert can say is: We need to know more about this one! And that’s perfectly okay – it keeps the world of plants interesting and full of possibilities for future discovery.

Spiraea Japonica Var. Bullata

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Rosales

Family

Rosaceae Juss. - Rose family

Genus

Spiraea L. - spirea

Species

Spiraea japonica L. f. - Japanese meadowsweet

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA