Parasenecio hastatus aka Chinese Haalahalam

Parasenecio hastatus is a member of the daisy family. The name of that family is Asteraceae. Its native range starts in eastern Europe. It reaches the Russian Far East and Japan. Kew records it as a plant of temperate regions. The RHS says it is not native to Britain. The same is true of Ireland, according to the RHS.

Kew gives two terms for the plant's life form. One is perennial, which means it lives for more than two years. The other is rhizomatous geophyte. This term means a plant with underground stems called rhizomes. Both terms support treating it as a perennial plant. The supplied records for this species give no mature size. They do not state how tall it grows. Nor do they state how wide it spreads. They give no details of its stems or leaves. Details of its flowers and fruit are also absent.

The RHS accepts Parasenecio hastatus as the correct name. It lists two other names for the same species. These are Cacalia glabra Ledeb. and Cacalia hastata. Such names are known as synonyms. The supplied garden notes concern Cacalia hastata tanakae instead. That name refers to a taxon below species rank. In other words, the notes cover a group within a species. They do not cover the whole species as such. Those notes cannot establish care needs for the whole species. Nor can they establish its garden traits.

The evidence for the species gives no firm light guidance. It does not establish what soil the plant needs. Nor does it give firm advice on how to water it. It gives no hardiness rating to show cold tolerance. It also gives no dates for when flowers bloom. Thus, the supplied species records leave these care needs unresolved.

These records do not confirm which parts, if any, are edible. They do not settle whether the plant is toxic. A lack of such facts does not establish safety. Pests and diseases also remain unconfirmed in these records. The same gaps apply to uses in the landscape. The records do not establish ways to propagate it. That means ways to grow more plants from existing ones.