diff --git a/components/ResultCard.tsx b/components/ResultCard.tsx
index 3e1d804..71f6394 100644
--- a/components/ResultCard.tsx
+++ b/components/ResultCard.tsx
@@ -100,8 +100,8 @@ export const ResultCard: React.FC<ResultCardProps> = ({
         <View style={styles.careGrid}>
           {[
             { icon: 'water' as const, label: t.water, value: t.waterEveryXDays.replace('{0}', result.careInfo.waterIntervalDays.toString()), color: colors.info, bg: colors.infoSoft },
-            { icon: 'sunny' as const, label: t.light, value: result.careInfo.light || t.unknown, color: colors.warning, bg: colors.warningSoft },
-            { icon: 'thermometer' as const, label: t.temp, value: result.careInfo.temp || t.unknown, color: colors.danger, bg: colors.dangerSoft },
+            { icon: 'sunny' as const, label: t.light, value: (result.careInfo.light && result.careInfo.light !== 'Unknown') ? result.careInfo.light : t.unknown, color: colors.warning, bg: colors.warningSoft },
+            { icon: 'thermometer' as const, label: t.temp, value: (result.careInfo.temp && result.careInfo.temp !== 'Unknown') ? result.careInfo.temp : t.unknown, color: colors.danger, bg: colors.dangerSoft },
           ].map((item) => (
             <View key={item.label} style={[styles.careCard, { backgroundColor: colors.surface, borderColor: colors.border }]}>
               <View style={[styles.careIcon, { backgroundColor: item.bg }]}>
@@ -118,8 +118,8 @@ export const ResultCard: React.FC<ResultCardProps> = ({
             <Text style={[styles.detailsTitle, { color: colors.textSecondary }]}>{t.detailedCare}</Text>
             {[
               { text: t.careTextWater.replace('{0}', result.careInfo.waterIntervalDays.toString()), color: colors.success },
-              { text: t.careTextLight.replace('{0}', result.careInfo.light || t.unknown), color: colors.warning },
-              { text: t.careTextTemp.replace('{0}', result.careInfo.temp || t.unknown), color: colors.danger },
+              { text: t.careTextLight.replace('{0}', (result.careInfo.light && result.careInfo.light !== 'Unknown') ? result.careInfo.light : t.unknown), color: colors.warning },
+              { text: t.careTextTemp.replace('{0}', (result.careInfo.temp && result.careInfo.temp !== 'Unknown') ? result.careInfo.temp : t.unknown), color: colors.danger },
             ].map((item, i) => (
               <View key={i} style={styles.detailRow}>
                 <View style={[styles.detailDot, { backgroundColor: item.color }]} />
diff --git a/server/index.js b/server/index.js
index 06c1dfd..a9d064c 100644
--- a/server/index.js
+++ b/server/index.js
@@ -69,6 +69,14 @@ const SEMANTIC_SEARCH_COST = 2;
 const HEALTH_CHECK_COST = 2;
 const LOW_CONFIDENCE_REVIEW_THRESHOLD = 0.8;
 
+let catalogCache = null;
+
+const getCachedCatalogEntries = async (db) => {
+  if (catalogCache) return catalogCache;
+  catalogCache = await getPlants(db, { limit: 500 });
+  return catalogCache;
+};
+
 const DEFAULT_BOOTSTRAP_PLANTS = [
   {
     id: '1',
@@ -627,18 +635,16 @@ app.post('/v1/scan', async (request, response) => {
     let modelUsed = null;
     let modelFallbackCount = 0;
 
-    if (!isGuest(userId)) {
-      creditsCharged += await consumeCreditsWithIdempotency(
-        db,
-        userId,
-        chargeKey('scan-primary', userId, idempotencyKey),
-        SCAN_PRIMARY_COST,
-      );
-    }
+    const [creditResult, accountSnapshot, catalogEntries] = await Promise.all([
+      isGuest(userId)
+        ? Promise.resolve(0)
+        : consumeCreditsWithIdempotency(db, userId, chargeKey('scan-primary', userId, idempotencyKey), SCAN_PRIMARY_COST),
+      getAccountSnapshot(db, userId),
+      getCachedCatalogEntries(db),
+    ]);
+    creditsCharged += creditResult;
 
-    const accountSnapshot = await getAccountSnapshot(db, userId);
     const scanPlan = accountSnapshot.plan === 'pro' ? 'pro' : 'free';
-    const catalogEntries = await getPlants(db, { limit: 500 });
     let result = pickCatalogFallback(catalogEntries, imageUri, false, { silent: true });
     let usedOpenAi = false;
 
diff --git a/server/lib/scanGrounding.js b/server/lib/scanGrounding.js
index 87cab0e..ba4abfa 100644
--- a/server/lib/scanGrounding.js
+++ b/server/lib/scanGrounding.js
@@ -115,8 +115,8 @@ const applyCatalogGrounding = (aiResult, catalogEntries, language = 'en') => {
       description: aiResult.description || matchedEntry.description || '',
       careInfo: {
         waterIntervalDays: Math.max(1, Number(matchedEntry.careInfo?.waterIntervalDays) || Number(aiResult.careInfo?.waterIntervalDays) || 7),
-        light: matchedEntry.careInfo?.light || aiResult.careInfo?.light || 'Unknown',
-        temp: matchedEntry.careInfo?.temp || aiResult.careInfo?.temp || 'Unknown',
+        light: (matchedEntry.careInfo?.light && matchedEntry.careInfo.light !== 'Unknown') ? matchedEntry.careInfo.light : (aiResult.careInfo?.light || 'Unknown'),
+        temp: (matchedEntry.careInfo?.temp && matchedEntry.careInfo.temp !== 'Unknown') ? matchedEntry.careInfo.temp : (aiResult.careInfo?.temp || 'Unknown'),
       },
     },
   };