The options differ in who finds the sources (Perplexity, the gardener with Gemini support, or a notebook of the gardener picks). No option is set as primary.
Option A: Perplexity: finds candidate plants with cited pages
Best when: Finding sources is the hard part
What it does: Perplexity finds cited pages; you measure, check and write
Strong at: Cites and links original sources
Limit: Vendor asks users to double-check sources
Free plan: Yes, limited (Pro Searches 3/day, Research 1/month)
Option B: Gemini: turns photos into a space table
Best when: You want photos turned into a table and pick sources yourself
What it does: Gemini builds tables and lists; you research and check
Strong at: Accepts photo uploads with typed notes
Limit: Rolling upload limits can pause a long photo session
Free plan: Yes, limited
Option C: Gemini Notebook: cited plant fit from your pages
Best when: Answers should stay inside guidance you picked
What it does: Gemini Notebook quotes your pages; you check and write
Strong at: Answers grounded only in sources you chose
Limit: Images, embedded videos and nested pages not imported; paywalled pages unsupported
Free plan: Yes, limited (notebook and source caps per tier)