Umemura Farm Website – Devlog #6: Facing the Truth Behind Seasonal UX

Using Next.js to Dynamically Adapt Seasonal Product Messaging

When I realized that Next.js allows us to dynamically change content based on the current date, a light bulb went off.

Shouldn’t the asparagus sales page adapt to the season?

Until now, the landing page showed the same information year-round. But asparagus isn’t like that. It tastes different, grows differently, and is sold differently depending on the season. By ignoring this, the page was giving users a static message for a dynamic product.

Insight: Small Mismatches Can Hurt Trust

In a world where anyone can voice opinions online, a small UX mismatch can leave a lasting impression. What if the page says “Enjoy our thick asparagus!” but in reality, it’s the season when only M-sized stalks are being shipped? Trust is broken. That could be fatal for a small business.

The Fix: Date-Aware Conditional Rendering in Next.js

Here’s the basic idea I implemented:

ts
// utils/getSeasonalPhase.ts
export const getSeasonalPhase = () => {
  const month = new Date().getMonth() + 1;

  if (month >= 3 && month <= 5)
    return { label: "Spring Asparagus", mode: "On Sale" };
  if (month >= 6 && month <= 8)
    return { label: "Summer Asparagus", mode: "On Sale" };
  if (month >= 9 && month <= 11)
    return { label: "Autumn Asparagus", mode: "On Sale" };
  return { label: "Spring Asparagus", mode: "Pre-Order" };
};

Then I used this in a simple React component to dynamically display headlines and CTAs.

tsx
const { label, mode } = getSeasonalPhase();
return (
  <div>
    <h2>{label} is {mode}</h2>
    <button>Learn More</button>
  </div>
);

This way, every season feels intentional, no more “year-round promotion for a product that doesn’t exist yet”.

Fear, Realization, and Relief
The more I built this LP, the more I saw how much I had overlooked. It feels like digging a bottomless pit, every insight uncovers another flaw.

I was genuinely scared.

What if I had launched with the wrong seasonal messaging? What if someone paid for something they couldn’t deliver? They’d lose credibility, trust, and maybe the whole business.

Better to suffer now than after launch.

Tech Stack

• Next.js — Framework for static & dynamic content

• TypeScript — Type safety for peace of mind

• Tailwind CSS — Quick, responsive UI styling

• shadcn/ui — Beautiful, accessible components

No login, no database, no payment logic. This is a static LP with strong UX focus.

Final Thoughts
Every time I fix something small, it leads me to fix something bigger. Building landing pages isn’t just HTML and CSS. It’s strategy, empathy, and protecting trust.

Tomorrow, I’ll start exploring the best layout structure and component combinations for seasonal promotions. If there’s a better tool than what I’m using, I want to find it.

Stay tuned. There’s so much more to get right.

Date: June 15, 2025
tags: nextjs, webdev, frontend, tailwindcss