Guides
Practical guides from VNCNT Labs for the jobs that come around every few weeks, months or years: frost dates, houseplants, home maintenance, pet vaccines, renewals and more. Every guide cites its sources.
- Last Frost Date by ZIP Code: How to Find It and Use It
What the 10%, 50% and 90% last frost dates mean, how to look up NOAA's official date for your ZIP code, and how to count back to seed-starting dates.
- How Often to Water Houseplants (and Why a Fixed Schedule Fails)
Why weekly watering kills houseplants, how to tell when a plant needs water, how to water properly, and starting intervals for common plants.
- Home Maintenance Checklist: Monthly, Seasonal and Yearly Jobs
A home maintenance checklist sorted by how often each job comes up, with intervals from ENERGY STAR, the DOE, NFPA and the U.S. Fire Administration.
- Dog and Cat Vaccine Schedule: Puppies, Kittens and Adults
Core and non-core vaccines for dogs and cats, puppy and kitten series timing and adult boosters, summarized from the AAHA and AAHA/AAFP guidelines.
- How Often to Replace Common Household Items
Replacement intervals for toothbrushes, contact lens cases, mascara, sunscreen, filters, smoke and CO alarms and car seats, from the ADA, CDC, FDA, NFPA and more.
- When to Renew Your U.S. Passport (Before It Expires)
How early to renew a U.S. passport, current processing times and fees, the six-month validity rule, and who can renew by mail or online.
- Car Loan Interest Deduction (2025-2028): Who Qualifies
The new deduction for car loan interest, explained: the $10,000 cap, income phase-out, U.S. final assembly rule, which loans qualify, and how to claim it on Schedule 1-A.